Gun Parts
Welcome to the Gun Parts superstore at Boss Firearms Company, LLC. Whether you are undertaking a custom precision build, performing routine armorer maintenance, or upgrading an existing platform, we stock the high-performance components you need. As an authorized dealer for premium OEM and aftermarket manufacturers, we provide everything from stripped receivers and match-grade triggers to enhanced bolt carrier groups (BCGs) and duty-ready barrels for rifles, handguns, and shotguns.
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LMT Defense - MRP-H MLOK 12.5" AR10/AR308 Upper Receiver - R-LM308BML1
LMT Defense
$1,181.70The LMT Defense MRP-H® M-LOK 12.5" AR10/AR308 Upper Receiver (R-LM308BML1) is built around the patented LMT Monolithic Rail Platform (MRP™) engineered for large-caliber platforms. Receiver and...$1,181.70 -
LMT Defense - MRP-L MLOK 9.25" AR15 Upper Receiver - L7X1A
LMT Defense
$890.10The LMT Defense MRP-L M-LOK 9.25" AR15 Upper Receiver (L7X1A) features the patented LMT Monolithic Rail Platform (MRP™) — the upper receiver and handguard are machined from a single piece of forged...$890.10 -
LMT Defense - MRP-L MLOK 11.5" Shovelnose AR15 Upper Receiver - L7ZN2A
LMT Defense
MSRP: $1,014.00$940.50The LMT Defense MRP-L M-LOK 11.5" AR15 Upper Receiver (L7ZN2A) features the patented LMT Monolithic Rail Platform (MRP™) — the upper receiver and handguard are machined from a single piece of forged...MSRP: $1,014.00$940.50 -
Out of stockOn Sale
Surefire - SOCOM 762 Muzzle Brake/silencer Adapter - SFMB-762-5/8-24
Surefire
Now: $152.00Was: $169.00The advanced SureFire SFMB-762-5/8-24 muzzle brake, which fits the Armalite AR-10, DPMS LR308, and 7.62 mm rifles with 5/8-24 muzzle threads, greatly reduces both recoil impulse and muzzle rise and...Now: $152.00Was: $169.00 -
On Sale
Surefire - SOCOM 556 Muzzle Brake/silencer Adapter 1/2x28 - SFMB-556-1/2-28
Surefire
Now: $152.00Was: $169.00The SureFire SOCOM 5.56 Muzzle Brake/Suppressor Adapter 1/2x28 (SFMB-556-1/2-28) is SureFire's muzzle brake and Fast-Attach® suppressor mounting adapter for 5.56mm rifles with 1/2x28 muzzle threading...Now: $152.00Was: $169.00 -
LMT Defense - Enhanced AR15 Trigger Guard - R-LMP109AE
LMT Defense
MSRP: $42.50$39.42The LMT Defense Enhanced AR15 Trigger Guard (R-LMP109AE) is a mil-spec aluminum trigger guard designed to give shooters extra finger clearance when operating in cold weather or with gloves. A direct...MSRP: $42.50$39.42