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Assault With a Dangerous Weapon and Assault and Battery With a Dangerous Weapon in Massachusetts
Updated August 2026
Massachusetts has two closely related dangerous-weapon assault offenses. Assault by means of a dangerous weapon, commonly called ADW, is charged under G.L. c. 265, § 15B. Assault and battery by means of a dangerous weapon, or ABDW, is charged under G.L. c. 265, § 15A.
Both are felonies, but they do not have the same elements. ADW does not require physical contact. ABDW requires a touching by means of the alleged weapon. That difference affects the prosecution’s proof, the available defenses, and the maximum sentence.
This page addresses ADW and ABDW allegations that do not arise from a family or household relationship. Serpa Law Office has a separate guide to ADW and ABDW in Massachusetts domestic violence cases.
The Difference Between ADW and ABDW in Massachusetts
The simplest distinction is whether a battery occurred. ADW is an assault with a dangerous weapon. The Commonwealth may prove either an attempted battery or an immediately threatened battery, but it does not need to prove that the defendant or the weapon touched the complainant.
ABDW requires a battery. The prosecution must prove an actual touching by means of the dangerous weapon. The contact may be direct, such as striking someone with an object, or indirect, such as causing the person to collide with an object or surface.
The mental-state rules are also different. ADW is an intentional offense. ABDW may be based on an intentional touching or on reckless conduct involving a dangerous weapon that causes bodily injury.
The label used in a police report does not settle the charge. A raised object, an attempted strike that misses, a threat made with an apparent firearm, and a completed strike present different element questions. The evidence must be matched to the correct statutory theory.
Assault by Means of a Dangerous Weapon Under G.L. c. 265, § 15B
Under G.L. c. 265, § 15B(b), ADW is punishable by up to five years in state prison, up to two and one-half years in a jail or house of correction, or a fine of up to $1,000.
The Massachusetts District Court model jury instruction for ADW recognizes two methods of proving the assault. They are alternative ways to establish the offense rather than separate crimes.
Attempted-Battery ADW
For an attempted-battery theory, the Commonwealth must prove a specific intent to commit a battery and an overt act toward completing it. The act must come reasonably close to a touching and the attempt must be made by means of a dangerous weapon.
The complainant does not need to know about the attempt or experience fear. The focus is the defendant’s alleged intent, the act taken, how close the act came to completion, and the connection between that act and the weapon.
Immediately-Threatened-Battery ADW
For an immediately-threatened-battery theory, the Commonwealth must prove that the defendant intended to place the complainant in fear of an immediate battery. It must also prove conduct that the complainant reasonably perceived as an immediate threat and that the threat was made with a dangerous weapon.
This theory requires both the defendant’s intent and the complainant’s reasonable perception. Words alone, a conditional statement about future harm, or an object too remote to present an immediate threat may fail to establish one or more elements. The entire interaction still matters.
Pointing what appears to be a firearm, raising an object while close enough to strike, or driving toward a person can produce an ADW charge without contact. Whether the conduct proves ADW depends on the applicable theory and the circumstances, not the example alone.
Assault and Battery by Means of a Dangerous Weapon Under G.L. c. 265, § 15A
Basic ABDW under G.L. c. 265, § 15A(b) is punishable by up to ten years in state prison, up to two and one-half years in a house of correction, a fine of up to $5,000, or both a fine and imprisonment.
The Commonwealth may proceed under an intentional or reckless theory. The complaint language, discovery, proposed jury instructions, and bill of particulars can help identify the theory that must be defended.
Intentional ABDW
The Superior Court model ABDW instruction requires proof that the defendant touched the complainant, did so by means of a dangerous weapon, intended the touching, and acted without legal justification.
The Commonwealth does not have to prove an intent to injure. A slight touching can satisfy the battery element if the prosecution proves the dangerous weapon, intent, and absence of justification. Accident remains relevant because an unintentional touching does not establish intentional ABDW.
Reckless ABDW
Reckless ABDW requires proof of intentional conduct involving a dangerous weapon, a high degree of likelihood that substantial harm would result, knowledge or reason to know of that risk, and bodily injury caused by the conduct.
This theory is not a substitute for proof whenever contact was unintended. Ordinary carelessness is not enough, and bodily injury is a required part of reckless ABDW. The defense should separate the conduct, degree of risk, defendant’s knowledge, causation, and injury instead of treating recklessness as a conclusion.
Aggravated ABDW and Offenses Against a Person Sixty or Older
Section 15A(c) increases the maximum state-prison sentence to fifteen years and the maximum fine to $10,000 in four circumstances. The Commonwealth must prove the applicable aggravating circumstance beyond a reasonable doubt.
- The ABDW caused serious bodily injury.
- The complainant was pregnant, and the defendant knew or had reason to know of the pregnancy.
- A qualifying restraining, vacate, or no-contact order protected the complainant, and the defendant knew about it.
- The defendant was at least eighteen and the complainant was under fourteen.
Serious bodily injury has a narrow statutory definition. It means permanent disfigurement, loss or impairment of a bodily function, limb, or organ, or a substantial risk of death. Pain, bruising, stitches, or medical treatment does not automatically establish that definition.
Separate subsections address ADW and ABDW against a person sixty or older. Sections 15B(a) and 15A(a) include prior-offense and sentencing provisions that differ from the basic offenses. The defendant’s age, the complainant’s age, and the record of any alleged prior conviction must be confirmed before advising on exposure.
What Counts as a Dangerous Weapon
Massachusetts distinguishes objects dangerous by design from ordinary objects that may be dangerous as used. A firearm and some knives are common examples of objects designed for use as weapons.
An object made for an innocent purpose may qualify when it is used in a way that reasonably appears capable of causing serious injury or death. Vehicles, bottles, tools, furniture, footwear, and animals have been treated as potential dangerous weapons in particular circumstances.
The object’s name does not answer the question. Its size, weight, shape, condition, movement, force, point of contact, distance, and alleged manner of use may all matter. When dangerousness depends on how an ordinary object was used, the issue is ordinarily for the factfinder.
ADW may also involve an object that appears capable of causing injury even when it is not operational. The complainant’s perception is particularly important under the immediately-threatened-battery theory. ABDW still requires proof that the touching occurred by means of a weapon that satisfies the applicable dangerousness standard.
Common Defenses to ADW
No immediate threat was intended or perceived. Under the threatened-battery theory, ambiguous words, distance, intervening barriers, the direction of movement, and the complainant’s contemporaneous conduct may contradict an immediate threat.
The conduct did not come reasonably close to a battery. Preparation, possession of an object, or angry speech is not necessarily an attempted battery. The overt act must be sufficiently close to completing the intended touching.
The defendant lacked the required intent. Mistake, accident, misinterpreted movement, and the sequence captured on video can defeat the specific intent required for the charged theory.
The object was not a dangerous weapon. An ordinary object does not become a dangerous weapon merely because it was present during a confrontation. The alleged use and apparent capacity for serious harm must be proved.
Common Defenses to ABDW
No touching occurred by means of the object. Displaying or possessing an object is not enough for ABDW. The Commonwealth must connect the alleged battery to the weapon.
The contact was accidental and not reckless. An accident can defeat intentional ABDW. The prosecution must separately establish the substantial risk, culpable conduct, knowledge, injury, and causation required for reckless ABDW.
The medical evidence does not prove the charged injury. Hospital treatment does not itself establish serious bodily injury. Records, images, expert evidence, and the statutory definition must be compared carefully.
The dangerous-weapon element is absent. The defense can challenge the object’s condition, alleged manner of use, capability, and connection to the contact.
Self-Defense and Defense of Another
A person may use reasonable force against an imminent use of unlawful force. Once the evidence raises self-defense, the Commonwealth must disprove the justification beyond a reasonable doubt.
The presence of an alleged weapon does not eliminate self-defense. The court must determine whether the evidence calls for the nondeadly-force or deadly-force instruction. The relevant level of force is a factual question, and the response must be proportionate to the danger reasonably perceived.
Deadly force requires a reasonable belief of imminent danger of death or serious bodily injury. It also requires the use of reasonable means to avoid the combat, including retreat when Massachusetts law requires it.
Evidence of the complainant’s prior violence may be admissible when the defendant knew about it and it affected a reasonable concern for safety. Under Commonwealth v. Adjutant, specific acts initiated by the complainant may also be relevant when self-defense is raised and the identity of the first aggressor or first user of deadly force is disputed.
The defense must provide timely notice before offering Adjutant evidence, and the rule does not extend in the same way to defense of another. The firm’s Massachusetts self-defense guide explains proportionality, retreat, prior-act evidence, and the current instructions.
Evidence That Can Decide an ADW or ABDW Case
These cases often arise from short encounters in streets, bars, workplaces, campuses, vehicles, or public buildings. A police narrative may compress several movements and statements into one conclusion. The original evidence can show a different sequence.
Surveillance video, body-camera footage, phone video, photographs, 911 recordings, dispatch timestamps, messages, location information, and complete witness statements should be obtained early. The condition and dimensions of the alleged object may be as important as testimony describing it.
For ABDW, the physical evidence should be compared with the claimed contact and injury. For ADW, distance, sight lines, barriers, timing, the complainant’s perception, and the defendant’s apparent ability to complete the threatened act require separate attention.
A complainant’s absence does not automatically require dismissal. The Commonwealth may seek other witnesses, recordings, statements, medical records, and photographs. Each out-of-court statement still requires an evidence rule, and testimonial statements raise an additional Confrontation Clause issue.
Bail, Dangerousness, and the Court Process
ADW and ABDW are felonies that may support a motion for a dangerousness hearing under G.L. c. 276, § 58A. Eligibility does not establish that detention is proper.
The judge must consider whether release conditions will reasonably assure the safety of another person or the community. Pretrial detention requires clear and convincing evidence that no combination of conditions will do so. The defense may contest the factual account and propose enforceable conditions.
The six-hour bail restriction in G.L. c. 276, § 42A is tied to an adult arrest for conduct that would constitute abuse under Chapter 209A. It does not apply to an ordinary non-domestic case merely because ADW or ABDW is charged.
A case may proceed in a District Court or the Boston Municipal Court, or by indictment in the Superior Court. Early decisions may include preserving video, seeking the alleged object, challenging identification, requesting particulars, addressing bail, and evaluating a motion to suppress unlawfully obtained evidence.
Reducing or Resolving the Charge
If the Commonwealth cannot prove the dangerous-weapon element but can prove a simple assault or battery, a lesser offense may remain. Whether a particular lesser instruction is available depends on the charged theory and the evidence.
Other cases turn on whether the evidence proves contact. A disputed ABDW allegation may instead present an ADW issue, while an ADW allegation may fail if neither an attempted battery nor an immediately threatened battery can be proved.
A defense should not assume that reduction is the correct goal. Dismissal or acquittal may be appropriate when the evidence is insufficient, unlawfully obtained, or contradicted by reliable records. The guide to dismissal of Massachusetts criminal cases explains the procedural routes.
Criminal Records and Other Consequences
An arraignment creates a CORI entry. A dismissal or acquittal may be eligible for sealing without the seven-year conviction waiting period. A felony conviction ordinarily requires satisfaction of the statutory seven-year period and the other requirements of G.L. c. 276, § 100A.
A conviction may affect firearms eligibility under Massachusetts and federal law. The result depends on the precise offense, disposition, sentence, and any applicable restoration provision. A person facing a dangerous-weapon charge should obtain advice before accepting a plea or admission that may affect possession or licensing.
Immigration consequences also require analysis before any plea. The statutory theory, record of conviction, sentence, and federal definitions can determine whether a disposition is treated as a crime of violence or another removable offense. A Massachusetts CWOF may still be a conviction for federal immigration purposes.
Students and licensed professionals may have separate reporting, disciplinary, or fitness requirements. The firm’s guides to professional-license consequences, student criminal defense, and immigration consequences address those parallel concerns.
Frequently Asked Questions About ADW and ABDW
What is the difference between ADW and ABDW in Massachusetts?
ADW under G.L. c. 265, § 15B does not require physical contact. It requires an attempted or immediately threatened battery with a dangerous weapon. ABDW under § 15A requires an actual touching by means of the weapon. ABDW may be based on an intentional touching or reckless conduct that causes bodily injury.
Can someone be convicted of ADW if the weapon never touched anyone?
Yes. Physical contact is not an element of ADW. The Commonwealth must instead prove either an attempted battery that came reasonably close to completion or conduct the complainant reasonably perceived as an immediate threat of battery. The prosecution must also prove the required intent and dangerous-weapon element.
What objects can be dangerous weapons in a Massachusetts assault case?
Some objects are dangerous because they are designed to cause serious injury or death. An ordinary object can also qualify when it is used in a way that reasonably appears capable of causing serious injury or death. The object’s condition, size, movement, force, distance, and manner of use may all matter.
What are the maximum penalties for ADW and ABDW in Massachusetts?
Basic ADW carries up to five years in state prison. Basic ABDW carries up to ten years, while aggravated ABDW under G.L. c. 265, § 15A(c) carries up to fifteen years. House-of-correction and fine alternatives also appear in the statutes. Separate provisions apply when the complainant is sixty or older.
How Attorney Serpa Defends ADW and ABDW Charges
The review begins with the exact charge, statutory subsection, and prosecution theory. Police reports, recordings, video, photographs, medical records, witness accounts, digital communications, and the alleged object are examined against each element rather than against the officer’s summary.
Attorney Serpa determines whether the evidence alleges an attempt, an immediate threat, an intentional touching, or reckless injury. He then addresses dangerousness, self-defense, identification, admissibility, injury, causation, and collateral consequences in the order the case requires.
Serpa Law Office represents clients charged with ADW, ABDW, and related offenses in the Boston Municipal Court and Massachusetts District and Superior Courts. To discuss a pending case, call 617.936.0201 or request a confidential consultation.
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