Aggressive Criminal Defense for Assault and Battery with a Firearm in Greater Boston Massachusetts

Charged with Assault and Battery with a Firearm? Our Boston Defense Attorneys Are Prepared to Protect Your Future

If you’ve been charged with Assault and Battery with a Firearm in Massachusetts, the legal stakes are high, and your future may be on the line. With offices in Boston and Salem, the Law Office of Matthew W. Peterson provides dedicated legal representation to individuals facing violent crime charges across Suffolk, Essex, Middlesex, and Norfolk Counties. Our criminal defense law firm comprises a former prosecutor and a team of experienced, aggressive criminal defense attorneys who bring a strategic and informed approach to every case. We take each matter personally—because we understand how life-changing these accusations can be.

Our attorneys are known for their focused work in defending individuals facing serious assault and violent crime allegations. If you or someone you care about is facing a charge of Assault and Battery with a Firearm in Boston, Brighton, Chelsea, Salem, Lynn, Swampscott, Peabody, Saugus, Cambridge, Somerville, Newton, or Brookline, reach out to us immediately. The sooner you act, the stronger your defense will be.

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Understanding Assault and Battery with a Firearm in Massachusetts

In Massachusetts, Assault and Battery with a Firearm is considered a felony and is prosecuted under M.G.L. Chapter 265, Section 15G. This charge applies when someone commits an assault and battery while armed with a firearm. The penalties are severe and may include:

  • Mandatory minimum imprisonment of at least 3 years in state prison
  • A potential sentence of up to 5 years, or up to 2.5 years in a house of correction
  • Additional charges if the firearm was not lawfully possessed


In Massachusetts, firearm-related offenses are treated with strict scrutiny. A conviction can lead to long-term consequences beyond imprisonment, including the loss of your right to possess firearms, immigration consequences, and difficulty obtaining employment or housing.

What the Prosecution Must Prove

To convict someone of Assault and Battery with a Firearm in Massachusetts, prosecutors are required to prove several elements beyond a reasonable doubt. First, they must show that an assault and battery occurred—meaning unlawful physical contact or a harmful act was committed. Second, they need to establish that the person was armed with a firearm at the time of the offense. Finally, they must demonstrate that the act was intentional and not legally justified.

If a firearm was discharged or if the firearm was illegally possessed, additional or more serious charges may be added. These facts can significantly impact how the case is prosecuted. The role of the Law Office of Matthew W. Peterson is to carefully examine the government’s claims, challenge the evidence, and ensure your rights are fully protected throughout the process.

How Our Criminal Defense Law Firm Fights These Charges

The Law Office of Matthew W. Peterson builds every defense on thorough investigation, strategic legal arguments, and trial preparation. Whether the alleged incident happened in Boston, Salem, or elsewhere in the counties we serve, we focus on every detail that could weaken the prosecution’s case.

We examine questions like:

  • Was the firearm legally possessed?
  • Was there actual physical contact, or only a threat?
  • Are there inconsistencies in witness statements?
  • Did law enforcement violate your rights during arrest or investigation?


Our Boston criminal defense attorneys understand how the courts operate at both the district and superior court levels. We work with forensic experts, review surveillance footage, and consult with investigators when necessary. We prepare for trial while exploring every avenue for dismissal, reduction of charges, or diversion programs when applicable.

Where We Defend Clients

Our law firm handles Assault and Battery with a Firearm charges in courts across eastern Massachusetts. In Suffolk County, we represent individuals in Boston, Brighton, and Chelsea. In Essex County, we appear in courts in Salem, Lynn, Swampscott, Peabody, and Saugus. We also regularly take cases in Middlesex County, including Cambridge, Somerville, and Newton, as well as in Brookline, which is located in Norfolk County.

Whether your case is in a district or superior court, we understand how local procedures and court personnel can affect the outcome. Our familiarity with courts in these areas helps us build effective defense strategies that are grounded in real-world experience.

Why Choose Our Criminal Defense Law Firm

When facing a serious criminal charge, it’s important to choose a law firm that combines legal knowledge with courtroom experience. Our team includes a former prosecutor, which gives us a valuable perspective on how the state builds and presents its cases. We apply that insight to anticipate prosecutorial strategies and develop clear, tailored defenses for our clients.

Our law firm is recognized for providing direct, proactive representation. We prepare each case as though it may go to trial, while also looking for practical options that could result in reduced charges or dismissal. With the Law Office of Matthew W. Peterson, you’ll work with a team that treats your case seriously, communicates clearly, and is prepared to stand up for your rights at every stage.

Start Building Your Defense Now

If you or a loved one is facing Assault and Battery with a Firearm charges in Massachusetts, it is crucial to take immediate action. Our team at the Law Office of Matthew W. Peterson offers knowledgeable and committed defense in both Boston and Salem. Contact us now to set up a strategy session and learn how we can protect your rights, your record, and your future. The earlier you involve us, the more options you may have.

Frequently Asked Questions

What should I do if I'm charged with Assault and Battery with a Firearm in Massachusetts?

Contact an experienced Boston defense attorney immediately. Do not speak to police or prosecutors without legal representation. Early legal intervention can protect your rights.

Yes. Under M.G.L. c. 265 §15G, it is classified as a felony and carries mandatory prison time if convicted.

Depending on the circumstances, it may be possible to challenge the facts of the case or negotiate a reduction to a lesser offense. Each case is different and should be evaluated by a qualified Massachusetts defense attorney.

This charge carries a mandatory minimum sentence, so jail or prison time is likely unless the charge is dismissed or reduced to a non-mandatory offense.

Yes. Possession of a firearm alone does not prove assault and battery. Our attorneys will evaluate whether there was a lawful justification, mistaken identity, or other defenses.

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