MJ ARMS LLC Firearms Training
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MJ ARMS LLC Firearms Training
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MJ Arms LLC Firearms Safety in Braintree, MA
Firearms Sales, Training & Gunsmithing in South Shore, MA

MJ Arms, LLC Braintree, MA - Firearms Dealer

Providing First-Class Service to Firearm Owners Since 2017. We are dedicated to offering top-tier service to licensed firearm owners in Massachusetts. Whether you're looking to purchase a firearm, enhance your shooting skills, or receive certified firearm training, our team ensures a safe and personalized experience. 

Contact Us

Your Trusted Firearms Dealer & Training Provider in Massachusetts

MJ ARMS LLC has been a trusted name in the Massachusetts firearms industry, offering a personalized, one-on-one experience for both new and experienced gun owners. Unlike big-box stores, we provide a stress-free, informative environment, ensuring you find the right firearm for your needs while staying compliant with state and federal laws.


We also specialize in NFA items, including machine guns, suppressors, and other Class III firearms, guiding customers through the proper licensing and purchasing process.


 As a full-service firearms shop, we specialize in:
✔ Firearm Sales – Offering a wide selection of new and used handguns, rifles, shotguns, and accessories.
✔ Certified Training – State-approved License to Carry (LTC) classes, live-fire training, and one-on-one coaching.
✔ Gunsmithing Services – Firearm customization, repairs, and maintenance by experienced professionals.
✔ NFA Item Handling – We legally handle and facilitate the purchase and transfer of NFA-regulated items, including machine guns, suppressors, and short-barreled rifles (SBRs). 


Our Commitment to Safety & Education

At MJ ARMS LLC, we believe that firearm ownership comes with great responsibility. That’s why we are committed to providing comprehensive education and hands-on training to ensure every gun owner is confident, knowledgeable, and legally compliant. Whether you're applying for your Massachusetts LTC, looking to refine your shooting skills, or seeking expert guidance on firearm selection, we are here to help.

What We Offer

  • Firearm Sales (New & Used) – Handguns, rifles, shotguns, and accessories from top manufacturers.
  • LTC Safety Training – Massachusetts-approved License to Carry (LTC) classes, taught by a certified firearms instructor.
  • Live Fire & Private Training – One-on-one training sessions for firearm safety, accuracy, and defensive shooting.
  • Gunsmithing & Firearm Maintenance – Repairs, modifications, and custom work to keep your firearms in top condition.
  • NFA/Class III Firearms – Suppressors, machine guns, and other legally regulated firearms, with expert guidance on ownership compliance. 

Contact Us

Why Choose MJ ARMS LLC?

✔ Experienced & Certified

✔ Personalized One-on-One Service

✔ Personalized One-on-One Service

 Over 25 years of firearms experience, including training hundreds of MA LTC holders. 

✔ Personalized One-on-One Service

✔ Personalized One-on-One Service

✔ Personalized One-on-One Service

 A stress-free, customized buying and training experience. 

✔ Try Before You Buy

✔ Personalized One-on-One Service

✔ Massachusetts Compliance Experts

 Test firearms at the range before making a purchase. 

✔ Massachusetts Compliance Experts

✔ Massachusetts Compliance Experts

✔ Massachusetts Compliance Experts

 We help you navigate state and federal firearm laws. 

✔ Locally Owned & Operated

✔ Massachusetts Compliance Experts

✔ Locally Owned & Operated

 Proudly serving Braintree, Quincy, Weymouth, and surrounding areas. 

Contact MJ Arms, LLC

Have Questions?

📍 Located in Braintree, MA, we proudly serve Quincy, Weymouth, and surrounding Massachusetts communities. 

MJ ARMS LLC

10 Brookside Rd, Braintree, MA 02184

781-831-2560

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MJ ARMS LLC

10 Brookside Rd Braintree MA 02184

781-831-2560

 Legal & Compliance:
✔ Licensed by ATF & State of Massachusetts – Firearms, Ammo & Gunsmithing
✔ Certified Firearms Instructor – NRA & MA State Police Approved
✔ All sales and transfers comply with Massachusetts state and federal firearm laws 


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