Facing an Assault With a Dangerous Weapon Charge? Our Boston Defense Attorneys Are Ready to Stand Up for You
Being charged with Assault With a Dangerous Weapon is a serious matter under Massachusetts law. A conviction can lead to severe penalties, including prison time, fines, and a permanent criminal record. At the Law Office of Matthew W. Peterson, our criminal defense law firm has offices in both Boston and Salem, allowing us to serve clients throughout Suffolk County, Essex County, and beyond. Our team includes aggressive criminal defense attorneys and a former prosecutor who knows how the system works from the inside. Whether you’re from Boston, Chelsea, Brighton, Lynn, Peabody, or nearby cities like Cambridge, Somerville, or Brookline, our aggressive criminal defense attorneys are here to help you navigate the criminal justice system with clarity, experience, and dedication.

What is Assault With a Dangerous Weapon in Massachusetts?
In Massachusetts, Assault With a Dangerous Weapon is defined under Massachusetts General Laws Chapter 265, Section 15B. This offense occurs when someone attempts or threatens to cause harm to another person while using a weapon or object that could cause serious bodily injury. Contrary to popular belief, the weapon does not have to be a firearm or knife—it can be any object capable of causing harm, such as a bat, bottle, or even a car.
There are two primary elements the prosecution must prove:
- An assault occurred, meaning there was an attempt or threat of physical harm.
- The assault was carried out using a dangerous weapon.
The penalties for Assault With a Dangerous Weapon vary depending on the circumstances. If convicted, you could face up to five years in state prison or up to two and a half years in a house of correction, according to the Massachusetts statute. Aggravating factors, such as if the alleged victim is a minor, elderly, or public official, can result in enhanced penalties.
Why You Need an Experienced Boston Criminal Defense Attorney
Assault charges are often based on conflicting accounts. In many cases, there’s no physical evidence—only someone’s word against yours. That’s why you need a Boston criminal defense attorney who knows how to identify weaknesses in the prosecution’s case, challenge unreliable testimony, and protect your rights at every stage.
Our team at the Law Office of Matthew W. Peterson is known for being prepared, thorough, and strategic in defending clients against assault and violent crime charges. Having a former prosecutor on our team means we understand how the state builds its case—and how to break it apart.
Strategic, Personal, and Aggressive Criminal Defense
Our law firm is known for delivering aggressive courtroom representation grounded in legal skill and thorough preparation. Each case is treated as unique—we don’t use cookie-cutter strategies. Whether it’s challenging the credibility of witnesses, contesting the classification of the alleged weapon, or identifying procedural errors by law enforcement, our defense is designed to protect your rights and pursue the best possible outcome.
We handle cases involving Assault With a Dangerous Weapon across Suffolk County, including Boston, Chelsea, and Brighton, as well as Essex County communities like Salem, Lynn, Swampscott, and Saugus. We also represent clients in Cambridge, Somerville, Newton, and Brookline, ensuring that no matter where you are in Eastern Massachusetts, our Massachusetts defense attorneys are ready to assist.
What You Should Do After Being Charged
If you’ve been charged with Assault With a Dangerous Weapon, the first thing you should do is remain calm and avoid speaking to police or investigators without legal representation. Anything you say can and will be used against you in court. Do not try to explain or justify your actions before consulting a Boston defense attorney.
Gather all documents related to your case, such as police reports, summons, or any restraining orders, and bring them to your strategy session. The sooner you contact a defense attorney, the sooner we can begin analyzing your case, preserving evidence, and building your defense.
How the Law Office of Matthew W. Peterson Can Help
Our defense attorneys take each case personally. We recognize the stress and uncertainty you face when charged with a violent offense, and we work tirelessly to build the strongest possible defense. Here’s what you can expect when working with us:
- Thorough investigation of all facts, police reports, and witness statements.
- Experienced courtroom representation by aggressive criminal defense attorneys.
- Strategic negotiation for charge reduction or alternative sentencing when appropriate.
- Full legal guidance at every stage—from arraignment through trial or resolution.
If you’re facing an assault and violent crime charge, timing matters. Early intervention can make a major difference in the outcome of your case.
Contact Us to Set Up a Strategy Session
You do not have to face these charges alone. The Law Office of Matthew W. Peterson is here to help. If you’re dealing with an Assault With a Dangerous Weapon charge in Boston or nearby cities in Suffolk, Essex, Middlesex, or Norfolk Counties, contact us today to set up a strategy session. We’ll review your situation and discuss the most effective path forward.
Frequently Asked Questions
What qualifies as a "dangerous weapon" in Massachusetts?
According to Massachusetts law, a dangerous weapon includes any object that could cause serious injury or death. This may include guns, knives, bats, and even household items if used in a threatening manner.
Can I be charged even if no one was hurt?
Yes. You can be charged with Assault With a Dangerous Weapon even if there was no injury. The law only requires that the alleged victim was put in fear of harm due to your actions.
Will I go to jail if convicted?
Jail time is a possibility, especially for felony-level charges. However, outcomes vary depending on the circumstances and your prior record. A skilled Boston defense attorney can often help reduce or avoid incarceration.
How soon should I hire a defense attorney?
Immediately. Early legal representation can affect everything from bail conditions to the strength of your defense. Don’t delay in contacting a criminal defense law firm with experience in assault and violent crime cases.
Do I need a attorney if I’m innocent?
Absolutely. Innocent people can and do get convicted without proper representation. A qualified aggressive criminal defense attorney will ensure your rights are protected and your side is fully heard.