The defendant was convicted of felony-murder in the first degree, with armed burglary as the predicate felony.1 He was also convicted of two counts of assault and battery by means of a dangerous weapon, armed assault in a dwelling, home invasion, and armed burglary. The defendant filed a motion pursuant to Mass. R. Crim. P. 25 (b) (2), 378 Mass. 896 (1979), seeking reduction of the murder verdict. The trial judge allowed the motion and reduced the verdict to murder in the second degree. The Commonwealth appeals from the judge’s order reducing the verdict. The defendant appeals from his convictions2 and asks this court to order a new trial or to further reduce the verdict to manslaughter pursuant to G. L. c. 278, § 33E. For the following reasons, we affirm the conviction of murder in the first degree, reverse the order reducing the degree of guilt, reverse the convictions of assault and battery by means of a dangerous weapon and armed assault in a dwelling, vacate *810as duplicative the conviction of armed burglary, and decline to grant relief pursuant to G. L. c. 278, § 33E.
1. Facts. The defendant’s convictions stem from an incident in which a group of armed men stormed an apartment in a New Bedford housing project in retaliation for an earlier confrontation involving some of the apartment’s occupants. Three persons in the apartment — Robert Botelho, Matthew Grant, and Anthony Mullen — were stabbed in the course of the ensuing melee. Botelho died from his injuries. Grant and Mullen survived. The Commonwealth’s theory was that Rolon was the principal instigator of the group’s attack on the apartment and that he was the one who fatally stabbed Botelho during the course of that attack.
On the evening of January 20, 1996, Botelho, Mullen and Grant were visiting the apartment of Botelho’s girl friend, Natasha Azevedo. Azevedo lived in the apartment with her two-year old son, her sister Tiffany, and her cousin, Desiree Gibbs. After some period of drinking, the three men and three women decided to go to a party being held at a nearby apartment in the housing project. There was some concern about potential friction between Botelho and other guests who might be at the party, and the three men therefore armed themselves: Mullen with a “steak fork,” Grant with a hammer, and Botelho with a pistol. Botelho’s pistol, although it appeared real, had a plug in the barrel and was incapable of firing. After leaving Azevedo’s baby with a next door neighbor, the group proceeded to the party at around 11 p.m.
At the party, a fight erupted between Mullen and one of the other guests. During that altercation, Botelho pulled out his gun, waved it around, and told everyone to “get off [his] boy.” The defendant, Anthony Rolon, arrived shortly before the end of the fight and began arguing with Botelho. Rolon complained that Botelho would “bring the cops around” where he, Rolon, was “trying to make money.” During that argument, Botelho pulled his gun out, waved it around, and repeatedly pointed it at Rolon. In response, Rolon stretched out his arms and told Botelho to “come on, go ahead.” Various friends intervened, convinced Botelho to put the gun away and leave, and escorted Botelho and his companions back to Azevedo’s apartment to make *811certain that they left. However, despite the efforts to separate Botelho from Rolon, Rolon and a few of his friends followed close behind. Rolon continued shouting at Botelho (“Come on, you’re a big man, go ahead”). When they reached Azevedo’s apartment, words continued to be exchanged, with Rolon yelling for Botelho to come out and fight. Botelho ultimately told them to leave, and went inside Azevedo’s apartment. One of Rolon’s friends yelled out, “We’ll be back.” Rolon’s group then left, and all was quiet for some ten to twenty minutes thereafter.
During that interval of time, Rolon’s group joined up with a larger group of some fifteen to twenty young men. Most of them were armed, carrying knives, bats, shovels, hammers, sticks, and frying pans. As they assembled slightly down the hill from Azevedo’s apartment, someone asked what they were doing. An unidentified member of the group replied, “We’re [going to] take care of something.” Others were heard asking who had pulled a gun on Rolon. Rolon said that he “was going to get the kid” with the gun. Various people who had been at the earlier party saw the armed group and attempted to dissuade Rolon, telling him and his companions that they should “just drop it . . . just leave it alone,” that “the person’s gone, he’s left,” and “[t]here’s no more reason to fight.” However, Rolon did not respond, and “nobody seemed to listen.” Anticipating trouble, one partygoer went to telephone the police.
Rolon, at the head of one group, proceeded up the hill in the direction of Azevedo’s apartment, while a smaller group broke off and approached the apartment by a different route. As they reached the apartment, one group went around to the back while the other remained in front. The attack began by smashing the apartment windows with a rock, a board, and a shovel. Botelho, Mullen, and Grant rushed out the back door. Botelho, carrying his inoperable gun, ran at one of his attackers and struck him with the gun. However, the gun fell to the ground, and someone called out that the gun was a “fake.” Grant grabbed Botelho and rushed back toward the apartment. Rolon and one of his companions, Hidekel “Kelly” Hernandez, chased after Botelho and caught up with him just outside the back door. Hernandez began hitting Botelho; Rolon stabbed him several times. Botelho *812went back inside the apartment, and ultimately collapsed in the living room.
Meanwhile, other members of Rolon’s group were fighting with Mullen outside. Mullen was hit with a shovel and cut with a knife. When he made his way back inside the apartment, he was assaulted by yet another intruder with a knife. Others pushed their way through the back door and caught up with Grant, who had managed to get inside as far as the living room. Surrounded by attackers who had him pinned down on the couch, Grant was struck in the head with the handle of a hammer and stabbed in the buttocks and thigh, severing an artery. Versions differed as to the identity of the individuals who stabbed Mullen and Grant, and versions differed as to whether Rolon himself had ever been inside the apartment at any point.3 By all accounts, the scene was chaotic, and most of the perpetrators were never identified.
The attack ended when one of the intruders yelled out “five-o” (a reference to the imminent arrival of the police) and the group fled. Rolon and several others regrouped at a friend’s apartment shortly thereafter. Hernandez, whose hands were bloody, reported that he had gotten “the kid inside the house good,” and Rolon bragged that “he got that kid good with the gun.”
Botelho was still alive when police arrived at the scene, but he succumbed shortly thereafter. He had three deep stab wounds *813in the chest, the fatal wound being to the heart. He had also sustained blunt force injuries and lacerations to the head, neck, shoulders, back, arm, thigh, and hands.
2. Vouching for credibility of a witness. One of the participants in the storming of Azevedo’s apartment, Eddie Torres, was a juvenile at the time. Pursuant to a plea agreement, he pleaded to being delinquent by reason of murder in the second degree and testified for the prosecution at Rolon’s trial. Although other witnesses described Rolon’s role in the events leading up to the attack and confirmed his identity as one of the group of attackers, Torres was the only eyewitness to testify that it was Rolon who actually stabbed Botelho. On appeal, Rolon contends that the prosecutor improperly vouched for Torres in his direct examination and again in closing argument. We disagree.
During the direct examination of Torres, the prosecutor elicited the fact that Torres had a plea agreement. He then asked Torres whether he had agreed to provide “complete and truthful and accurate testimony,” to which Torres replied, “Yes.” In one subsequent question concerning the agreement, the prosecutor phrased the question in a fashion that made reference to the obligation to give “complete, truthful and accurate” testimony. The defendant objected to both questions; both objections were overruled.
Ordinarily, questions concerning an agreement’s requirement that a cooperating witness give “truthful” testimony should be reserved for redirect examination after cross-examination has attacked the witness’s credibility based on the plea agreement. See Commonwealth v. Rivera, 430 Mass. 91, 96-97 (1999); Commonwealth v. Ciampa, 406 Mass. 257, 264 (1989). However, there is not an absolute prohibition that prevents any and all direct examination reference to the agreement’s terms concerning “truthful” testimony. See, e.g., Commonwealth v. Marrero, 436 Mass. 488, 498-500 (2002) (two references during direct examination to witness’s obligation to “tell the truth” and her understanding that she could still be prosecuted for perjury did not amount to improper vouching); Commonwealth v. Irving, 51 Mass. App. Ct. 285, 294-295 (2001) (reference during direct examination to obligation to give “truthful, complete and accurate testimony” was not premature in light of *814defense counsel’s opening statement emphasizing that plea agreement gave cooperating witness motive to fabricate testimony).
Here, the attack on Torres’s credibility in connection with the plea agreement had been mounted in explicit terms in defense counsel’s opening statement. Defense counsel told the jury that the entire case depended on the credibility of Torres, that they could not convict Rolon unless they “believe[d] everything Torres tells [them] about what happened,” and that they would hear evidence of Torres’s agreement with the prosecution. Defense counsel then described the terms of that plea agreement as follows: “[H]e has got to tell you that Kelly Hernandez and Anthony Rolon killed Robert Botelho. If he doesn’t tell you that, he has no agreement.” Thus, by the time of Torres’s direct examination, the jury had already heard a significant mischaracterization of what his obligation under the agreement was, i.e., that the agreement identified specific details that Torres was required to include in his testimony. Such an express attack on Torres’s credibility, by way of a misstatement as to the contents of the plea agreement, opened the door sufficiently to justify allowing the prosecutor to elicit on direct examination the actual contents of the plea agreement. General references in an opening statement to a witness’s bias or motive because of the mere existence of a plea agreement would not be sufficient to avoid the requirement that questioning on the agreement’s stated obligation of “truthful” testimony await redirect examination. See Commonwealth v. Rivera, supra; Commonwealth v. Ciampa, supra. However, defense counsel’s own references to the purported contents of the plea agreement, particularly where those references included an erroneous characterization of the agreement’s terms, are sufficient.4 See Commonwealth v. Irving, supra at 295.
Rolon also complains that the prosecutor’s direct examination of Torres referenced the fact that his plea agreement had been signed by both his lawyer and his mother. See Commonwealth *815v. Marrero, supra at 501 (“preferable” practice to redact signatures of attorney and prosecutor before submitting agreement to jury because “[i]t is possible that the signatures could have signaled to the jury that the prosecutor and [the witness’s] attorney were attesting to [the witness’s] credibility,” but such redaction “not required” in absence of objection). Here, as in Commonwealth v. Marrero, supra, there was no objection to the evidence of the signatures, and the judge was not required to strike the evidence sua sponte. Moreover, the references to the signatures were not made in a context that would impermissibly suggest any attestation of the witness’s credibility. Rather, the questions now complained of arose for purposes of authenticating the agreement and refreshing Torres’s memory when he initially testified that he did not even recognize the agreement.5
Separate and apart from his arguments concerning the use of the plea agreement, the defendant moved for a mistrial on the ground that the prosecutor’s closing argument contained impermissible vouching for Torres when the prosecutor acknowledged that Torres had “lied” about his own participation in the event.6 A prosecutor does not, in any sense, “vouch” for a witness by conceding that the witness has “lied.” However, the defendant contends that the prosecutor’s labeling Torres a *816liar with respect to only a portion of his testimony implicitly vouched for the remainder of Torres’s testimony. Following a defense closing that had pointed to Torres’s incredible minimization of his own role in the event, we see no such implicit vouching in the prosecutor’s acknowledgment that Torres was “a horrible witness” who should not be believed whenever other witnesses provided contrary evidence but who should be believed with respect to those details that were supported by other evidence. This is a permissible — indeed a common — approach to the problem of a witness who has been shown to be less than truthful on certain aspects of his or her testimony: admit the dishonesty or inaccuracy that has been demonstrated by more reliable evidence, and point to the existence of evidence that corroborates other portions of the witness’s testimony that would make it reasonable to credit those other portions. It is not improper vouching for the prosecutor to point to reasons why a witness’s testimony, or portions of a witness’s testimony, should logically be believed. See Commonwealth v. Chavis, 415 Mass. 703, 713-714 (1993).
3. Torres’s guilty plea. Rolon contends that the prosecutor’s closing argument impermissibly pointed to Torres’s promised guilty plea as substantive evidence of Rolon’s own guilt as a joint venturer. A codefendant’s guilty plea is not admissible to prove the guilt of the defendant. See Commonwealth v. Martinez, 425 Mass. 382, 398-399 (1997); Commonwealth v. Powell, 40 Mass. App. Ct. 430, 436 (1996). However, contrary to the defendant’s argument, that is not how Torres’s proposed plea was used or argued. Rather, it was used and argued to address a separate issue that had been raised during the cross-examination of Torres. Defense counsel had pointed out that, while Torres claimed that he had not stabbed Botelho, he had nevertheless agreed to plead guilty to murder in the second degree in connection with Botelho’s death. That ostensible discrepancy was then used repeatedly as an illustration of Torres’s willingness to “lie” in order to obtain the benefits of his plea agreement. To put that discrepancy in context, the prosecutor’s closing argument asked the jury to consider the concept of joint venture in connection with their assessment of “why it is that Eddie Torres is pleading guilty,” and reminded *817them that Torres was represented by a lawyer at the time of his agreement.7 This reference did not suggest to the jury that Torres’s plea on a joint venture theory added weight to the Commonwealth’s joint venture theory against Rolon. Rather, it was used to point out that Torres could be guilty of murder even though he had not stabbed Botelho, and that his guilty plea therefore was not inconsistent with his assertion that he did not stab Botelho. There was no objection, and this brief reference to a theory that would harmonize Torres’s plea with his denial of individual guilt does not give rise to any substantial likelihood of a miscarriage of justice.
4. Motion for required findings of not guilty, a. Felony-murder. The defendant contends that the judge erroneously denied his motion for required finding of not guilty on the charge of felony-murder, and claims that there was insufficient evidence that he had committed the predicate felony of armed burglary, as either a principal or a joint venturer.8 Rolon acknowledges that there was evidence that he stabbed Botelho, but, where he attacked Botelho outside the apartment, without ever having entered the apartment, he argues that he did not himself commit any armed burglary.9 Rolon’s argument concerning insufficient evidence of his liability as a principal is easily disposed of, as felony-murder was ultimately submitted to the jury solely on a theory of joint venture.10 As to the alternative theory of joint venture, he contends that the evidence was insuf*818ficient to prove that he shared any intent with the perpetrators who did enter the premises and commit the armed burglary. However, the evidence amply supported the inference that retaliation for Botelho’s earlier assault on Rolon was the entire purpose of the venture; that Rolon was the one who had attempted to lure Botelho out of the apartment to engage in a retaliatory fight; and that, unsuccessful in that attempt, he had accompanied his obviously armed companions back to the apartment to storm it by force, spuming the attempts of those who were seeking to dissuade him from carrying the dispute further. There was ample evidence of Rolon’s shared intent.
Rolon also argues that, because the fatal stabbing occurred just outside the apartment without the need for him to enter the premises, Botelho’s death did not occur in connection with the predicate felony.11 However, it was the breaking of the premises by the joint venturers — the smashing of windows preparatory to entering the apartment — that drove Botelho outside to confront his attackers. He was then stabbed on the threshold, as the attackers were chasing him back inside the apartment. During an armed burglary, and certainly during an armed burglary by this many perpetrators, it is readily foreseeable that some victims will attempt to flee the premises, or will go outside to try to prevent the entry. The killing of such a victim occurs in connection with the armed burglary, without regard to whether the precise location of the killing is within or without the *819dwelling. That is precisely what happened to Botelho, and Rolon’s attempt to dissociate the killing from the predicate felony based on the fortuity that he caught up with Botelho on the threshold of the apartment is unpersuasive.
b. Other charges. Rolon contends that he was entitled to a required finding of not guilty on the other charges against him (assault and battery by means of a dangerous weapon on Grant and Mullen, armed assault in a dwelling, and armed burglary). The defendant’s motion for required findings of not guilty focused mainly on the argument that there was insufficient evidence of joint venture liability, but did also assert that there was no evidence of Rolon’s liability as a principal for those other crimes.12 The motion was denied, and these indictments were submitted to the jury on theories of both joint venture and principal liability.13 For the reasons discussed above, the evidence as to Rolon’s participation in a joint venture was adequate. However, Rolon is correct that the evidence was insufficient as to principal liability for these other crimes.
With respect to the indictment charging assault and battery by means of a dangerous weapon on Mullen and Grant, there was no evidence that Rolon himself struck either of those victims. With respect to the indictment charging armed assault in a dwelling, the statutory definition of that crime requires proof that the defendant “being armed with a dangerous weapon, enter[ed] a dwelling house and while therein assaulted] another with intent to commit a felony” (emphasis added). G. L. c. 265, § 18A. While the jury could infer that Rolon had “entered” the dwelling amidst the group observed by Azevedo (see note 3, supra), there was no evidence that Rolon himself *820committed any assault while in the dwelling.14 The verdict slip did not require the jury to specify whether they found the defendant guilty of these crimes based on the supportable theory of joint venture or based on the unsupportable theory of principal liability, and we therefore must reverse the convictions and set aside the verdicts on those indictments. See Commonwealth v. Flynn, 420 Mass. 810, 818 (1995).
With respect to the remaining indictment charging armed burglary, that armed burglary served as the predicate felony for the felony-murder conviction, and it therefore must be vacated as duplicative. See Commonwealth v. Gunter, 427 Mass. 259, 275-276 (1998).
5. Rule 25 (b) (2) motion. The judge allowed in part Rolon’s rule 25 (b) (2) motion, reducing the verdict to murder in the second degree. The Commonwealth appeals from that order, seeking reinstatement of the jury’s verdict of murder in the first degree, and Rolon asks us to reduce the verdict further pursuant to G. L. c. 278, § 33E. We agree with the Commonwealth that reduction of this verdict constituted an abuse of discretion. We therefore reinstate the verdict of murder in the first degree and decline to grant relief under G. L. c. 278, § 33E.
Pursuant to rule 25 (b) (2), a trial judge has the authority to reduce a verdict, despite the presence of evidence sufficient to support the jury’s original verdict. See Commonwealth v. Woodward, 427 Mass. 659, 666-667 (1998), and cases cited. That power is comparable to the power vested in this court pursuant to G. L. c. 278, § 33E, and a trial judge’s decision on a rule 25 (b) (2) motion “should be guided by the same considerations.” Commonwealth v. Gaulden, 383 Mass. 543, 555 (1981). The purpose behind the grant of such power to a judge is “to ensure that the result in every criminal case is consonant with justice.” Commonwealth v. Woodward, supra at 666. See Commonwealth v. Ghee, 414 Mass. 313, 321 (1993); Commonwealth v. Keough, 385 Mass. 314, 320 (1982). “[A] judge should use this power sparingly,” Commonwealth v. *821Woodward, supra at 667, and not sit as a “second jury.” Commonwealth v. Keough, supra at 321. We will not disturb a judge’s order reducing a verdict unless the judge abused his discretion or committed an error of law. Commonwealth v. Woodward, supra at 668, quoting Commonwealth v. Millyan, 399 Mass. 171, 188 (1987).
A judge’s discretion to reduce a verdict pursuant to rule 25 (b) (2) is appropriately exercised where the weight of the evidence in the case, although technically sufficient to support the jury’s verdict, points to a lesser crime. Thus, for example, where evidence of premeditation was “slim,” the judge did not abuse his discretion in reducing a verdict of murder in the first degree to murder in the second degree. See Commonwealth v. Ghee, supra at 322. See also Commonwealth v. Millyan, supra at 188-189 (verdict reduction appropriate where evidence of intoxication undermined theory of deliberate premeditation).15 Similarly, where the weight of the evidence suggests that the defendant did not act with malice, a murder verdict may appropriately be reduced to manslaughter. See Commonwealth v. Woodward, supra at 669-671 & n.14; Commonwealth v. Cobb, 399 Mass. 191, 192 (1987); Commonwealth v. Keough, supra at 320-321; Commonwealth v. Gaulden, supra at 557-558; Commonwealth v. Greaves, 27 Mass. App. Ct. 590, 594 (1989).16 In some cases, weaknesses in the evidence supporting the jury’s *822verdict were coupled with trial error that may have influenced the jury’s assessment of the issue. See Commonwealth v. Woodward, supra at 671 (although evidence suggested that defendant did not act with malice, jury not instructed on manslaughter); Commonwealth v. Millyan, supra at 188-189 (evidence of intoxication undermined theory of deliberate premeditation, but jury not instructed on issue of impairment due to intoxication). What is not justified, however, is reduction to a lesser verdict that would be inconsistent with the weight of the evidence, or reduction based solely on factors irrelevant to the level of offense proved. See Commonwealth v. Sabetti, 411 Mass. 770, 780-781 (1992) (failure to prove that defendant knew weight of cocaine did not justify reduction of verdict of trafficking in cocaine to possession with intent to distribute, because defendant’s knowledge of weight irrelevant to offense); Commonwealth v. Burr, 33 Mass. App. Ct. 637, 640-644 (1992) (error to reduce verdicts of trafficking in cocaine to possession with intent to distribute in absence of evidence that quantity of cocaine was below trafficking level).
We look, therefore, to determine whether there was some weakness in the evidence that Rolon committed felony-murder in the first degree, or evidence suggesting that he more likely committed some lesser form of homicide. If, as we conclude, the weight of the evidence is entirely consistent with felony-murder in the first degree, it is an abuse of discretion to reduce the verdict solely on factors unrelated to the weight of the evidence.
Here, the judge provided a written memorandum outlining his reasons for reducing the verdict to murder in the second degree. See Commonwealth v. Gaulden, supra at 556 (judge should state reasons for reducing verdict). Those reasons were that Botelho had pointed a gun at Rolon earlier in the evening (such that the purpose of the armed burglary was “violent retaliation”), with Rolon only becoming aware of the fact that the gun was inoperable sometime after the attack on the apartment was underway; that Rolon stabbed Botelho outside the house “before the intruders entered” and never went inside the house himself; and that Rolon was only eighteen years of age at the time of the murder. These stated reasons do not provide an adequate basis for reducing the verdict to murder in the second degree.
*823By his reference to Botelho’s being the initial aggressor with a weapon earlier that night, the judge was invoking a theory of provocation as a means of reducing the degree of felony-murder. While provocation resulting in a heat of passion would operate to negate malice, it is not germane to felony-murder, where malice need not be shown. For felony-murder, the intent to commit the predicate felony substitutes for malice. See Commonwealth v. Moran, 387 Mass. 644, 649 (1982), and cases cited. Evidence of provocation would not in any sense detract from evidence that the defendant committed the predicate felony and is not a proper basis on which to reduce a conviction of felony-murder.17
The next factor cited by the judge is, in substance, a rejection of the doctrine of joint venture as it applies to felony-murder. *824The judge’s conclusion that Rolon himself did not go into the apartment (and thus did not personally complete any armed “entry” into the occupied dwelling) is irrelevant to Rolon’s status as a joint venturer in the predicate felony of armed burglary.18 We recognize that the doctrines of felony-murder and joint venture may, on some hypothetical fact patterns, produce a conviction of murder in the first degree that would appear out of proportion to a defendant’s culpability. It may in some circumstances seem harsh to convict a defendant of murder in the first degree if the defendant was on the remote outer fringes of a joint venture to commit some felony that satisfied the felony-murder rule in only some hypertechnical way. We will assume, without deciding, that reduction of a verdict in such circumstances could be appropriate under rule 25 (b) (2).19 This case, however, does not present such circumstances. Rolon was not on the periphery of this joint venture — he was at its center and the very reason for its existence. The predicate felony here, armed burglary, is inherently dangerous to human life, see Commonwealth v. Jackson, 432 Mass. 82, 89-90 (2000), and the *825circumstances of this particular armed burglary — some twenty or more armed men forcibly invading an apartment to attack the hopelessly outnumbered occupants — made it extremely dangerous to human life. Nor was Rolon in any sense removed from that portion of the felony that resulted in the killing. To the contrary, he was the one who committed the actual killing. There was thus no weakness in the evidence of felony-murder in the first degree, no weight of evidence pointing more strongly toward some lesser homicide offense, and no circumstance that mitigated Rolon’s culpability for that felony-murder.
The judge’s final factor — Rolon’s age — is insufficient to justify reduction of the verdict. A defendant’s personal circumstances may be considered in conjunction with the evidence that points to a lesser degree of guilt, but personal circumstances alone do not justify reduction of a verdict. See Commonwealth v. Brousseau, 421 Mass. 647, 655-657 & n.7 (1996); Commonwealth v. Almon, 387 Mass. 599, 607-608 (1982); Commonwealth v. Haywood, 377 Mass. 755, 771 (1979); Commonwealth v. Burr, 33 Mass. App. Ct. 637, 642-643 (1992).
Although not relied on by the judge as a factor justifying reduction of the verdict, Rolon argues that none of the other defendants charged in connection with this homicide was convicted of murder in the first degree. The fact that separate trials against other defendants reached differing results does not by itself justify reduction of a defendant’s verdict. See Commonwealth v. Brousseau, supra at 656; Commonwealth v. Tavares, 385 Mass. 140, 159, cert. denied, 457 U.S. 1137 (1982), quoting Commonwealth v. Pisa, 372 Mass. 590, 597, cert. denied, 434 U.S. 869 (1977).20
6. Conclusion. We therefore affirm the conviction of murder *826in the first degree, reverse the order reducing the verdict to murder in the second degree, and decline to grant relief pursuant to G. L. c. 278, § 33E. As to the remaining indictments, we reverse the convictions of assault and battery by means of a dangerous weapon and armed assault in a dwelling, and vacate as duplicative the conviction of armed burglary.
So ordered.