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-L Quad Rail 9.25" AR15 Upper Receiver - L7S1A
LMT Defense
$890.10The LMT Defense MRP-L Quad Rail (Picatinny) 9.25" AR15 Upper Receiver (L7S1A) features the patented LMT Monolithic Rail Platform (MRP™) — the upper receiver and handguard are machined from a single...$890.10 -
LMT Defense - MRP-L MLOK 13.25" AR15 Upper Receiver - L7Y1A
LMT Defense
$940.50The LMT Defense MRP-L M-LOK 13.25" AR15 Upper Receiver (L7Y1A) features the patented LMT Monolithic Rail Platform (MRP™) — the upper receiver and handguard are machined from a single piece of forged...$940.50 -
LMT Defense - MRP-L MLOK 11.5" Specwar - AR15 Upper Receiver - L7Z1A
LMT Defense
$940.50The LMT Defense MRP-L M-LOK 11.5" AR15 Upper Receiver (L7Z1A) features the patented LMT Monolithic Rail Platform (MRP™) — the upper receiver and handguard are machined from a single piece of forged...$940.50 -
On Sale
Surefire Warcomp 7.62 5/8x24 Flash Hider/Suppressor - WARCOMP-762-5/8-24
Surefire
MSRP: $169.00Now: $152.00Was: $169.00The SureFire WARCOMP 7.62 5/8x24 Flash Hider/Suppressor Adapter (WARCOMP-762-5/8-24) is SureFire's multi-function muzzle device for 7.62mm rifles — simultaneously functioning as a highly effective...MSRP: $169.00Now: $152.00Was: $169.00 -
LMT Defense - 5.56mm 11.5" Chrome Lined MRP Barrel Assembly - L7TA1B
LMT Defense
$554.40The LMT Defense 11.5" Chrome Lined 5.56mm MRP Barrel Assembly (L7TA1B) is engineered specifically for LMT's Monolithic Rail Platform (MRP) upper receivers. This 11.5-inch, 5.56×45 (.223) barrel...$554.40 -
LMT Defense - Tactical Charging Handle Assembly - AR15 - LMP103T
LMT Defense
MSRP: $97.00$90.00The LMT Defense Tactical 5.56 Charging Handle (LMP103T) is an M4 Charging Handle Assembly with an Enhanced Tactical Latch — offering a significant upgrade over mil-spec charging handles. The enlarged...MSRP: $97.00$90.00 -
LMT Defense - Ambidextrous AR15 5.56 Charging Handle - R-LMP103TA
LMT Defense
MSRP: $108.00$100.35The LMT Defense Ambidextrous 5.56 Charging Handle (R-LMP103TA) features enhanced tactical latches on both sides for true ambidextrous operation. Dead-stop latches reduce tension on latch pins,...MSRP: $108.00$100.35 -
Out of stock
KAC Knights Armament Company SR-15/SR-16 Chrome Sand Cutter Bolt Carrier 30091-1
Knights Armament Company
$433.12The Sand Cutter bolt carrier features FAL-inspired dust/sand clearing cuts designed for reliable movement and operation in adverse conditions. Finished in a durable hard chrome, this carrier is...$433.12 -
LMT Defense 16" MRP Piston Complete Upper Receiver Bundle BFCLMT-16
LMT Defense
$1,650.00The LMT Defense 5.56mm 16" Piston MRP Barrel Assembly (L7PC1B) is a 16-inch chrome lined 5.56×45 (.223) barrel featuring LMT's short-stroke piston operating system — the key upgrade for shooters who...$1,650.00 -
Out of stock
KAC Knights Armament Company SR-15 URX-6 Notched Handguard 15" 122025-1
Knights Armament Company
$345.60Upgrade your 16-inch SR-15 build with the genuine Knight's Armament SR-15 URX 6 Notched 15-Inch Handguard. Engineered specifically to interface with KAC notched upper receivers, this lightweight...$345.60 -
Blue Force Gear Vickers 2-Point Combat Sling VCAS-125-OA-BK
Blue Force Gear
$64.95Blue Force Gear Vickers Combat Applications Sling sets the gold standard for tactical rifle carries. This two-point sling features a patent-pending Quick Adjuster that seamlessly transitions your M4...$64.95 -
Surefire M640T Rechargeable 700 Lumen Scout Light M640T-BK-PRO
Surefire
$341.00The SureFire M640T Turbo Scout Light Pro delivers 700 lumens and 70,000 candela of high-candela, long-range beam intensity for positive tactical target identification. Built with an integrated...$341.00