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MA Gun Store

Specializing in Preban, Military and NFA Firearms

NFA Class 3 Dealer & Manufacturer


About Us


Fine Line Firearms LLC is a Massachusetss gun store offering high quality firearms, ammunition, gunsmithing services, estate sale services, and comprehensive pre & post sale support!

Established in 2012, we have been providing the suburban Boston area and beyond with high quality arms and accessories in an alternative gun store atmosphere. Are you new to firearms ownership and want something you can depend on? New shooters are always welcome! In the market for a customized firearm to meet all your needs? How about a new upper for your gun? Does your training facility or department need a post-dealer sample or dummy firearm? Self Defense Enthusiasts, Collectors, or Competitors will find what they need at Fine Line Firearms LLC.

We are not your typical MA gun store. We offer personal one on one service and attention to detail. An appointment with us guarantees our full and undivided attention, with no lines, no waiting, and no grumpy gun guys.

Fighting S.2584 / H.4139 / HD.4420 Legislation

Help protect the Second Amendment in the Commonwealth! Make sure to contact your state legislators and advocate for the rights of the law-abiding! Make sure to check out our blog post and GOAL’s action page!


Recent MA Gun Store Arrivals

Shadow Systems DR920; 9mm

Shadow Systems DR920; 9mm

$999.99
SCCY DVG-1; 9mm

SCCY DVG-1; 9mm

$425.00
Sig Sauer MCX-SPEAR LT; 5.56mm; 16″; MA Okay,

Sig Sauer MCX-SPEAR LT; 5.56mm; 16″; MA Okay,

$2,800.00
PTR 9R; (MP5 Clone); MA OK

PTR 9R; (MP5 Clone); MA OK

$1,999.00
Spikes Tactical Custom Build 9MM Pistol Caliber Carbine, takes Glock Mags, with Giessele trigger, premium build, see details – MA OK

Spikes Tactical Custom Build 9MM Pistol Caliber Carbine, takes Glock Mags, with Giessele trigger, premium build, see details – MA OK

$1,600.00
Cadex Defense CDX-40 Shadow; .375 CheyTac; In-stock; MA OK

Cadex Defense CDX-40 Shadow; .375 CheyTac; In-stock; MA OK

$7,550.00
New Frontier, Side Charging AR-9, Takes Glock 9mm mags, MA OK

New Frontier, Side Charging AR-9, Takes Glock 9mm mags, MA OK

$1,600.00
New Frontier 9MM Pistol Caliber Carbine, takes Glock Mags, with Giessele trigger, premium build, see details – MA OK

New Frontier 9MM Pistol Caliber Carbine, takes Glock Mags, with Giessele trigger, premium build, see details – MA OK

$1,800.00
New Frontier 9MM Pistol Caliber Carbine, takes Glock Mags, with Giessele trigger, premium build, see details – MA OK

New Frontier 9MM Pistol Caliber Carbine, takes Glock Mags, with Giessele trigger, premium build, see details – MA OK

$1,700.00
We Buy Guns, MA Gun Store

We Buy Guns!

We will buy your guns: estates or collections.

Fair prices, we pay cash!

Contact us for more information.

MA Gun Store Highlights and Specials


Cadex Defense CDX-40 Shadow; .375 CheyTac; In-stock; MA OK
Cadex Defense CDX-40 Shadow; .375 CheyTac; In-stock; MA OK

Cadex offers the best in extreme long range sub-MOA precision.

NFA Engraving
NFA Engraving

Gunsmithing services to complete your own Form 1 NFA Item.

Ammunition Availability
Ammunition Availability

All MA clients are required to show a valid FID or LTC when purchasing ammunition.

Barrel Cutting and Threading for SBR Conversions
Barrel Cutting and Threading for SBR Conversions

Gunsmithing services to complete your own Short Barrel Rifle (SBR)


Pics of Lewis Guns at a Museum. MA Gun Store images


Our website is constantly being refined. Prices, descriptions, and other information may not be 100% accurate and are subject to change without notice.
Images are sometimes stock images for illustrative purposes only and not actual photos, product features are more likely to be accurate than the images.

If you have any questions please contact us. If it does not say MA OK then it’s probably not.

Our showroom is by appointment only between 10:30AM-5:30PM, please call ahead to make arrangements.