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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Out of stock
Barrett - 50 BMG Rifle Magazine 10 Rounds Fits M107A1 Rifles - #12808
Barrett Firearms
$190.00Barrett - 50 BMG Rifle Magazine 10 Rounds Fits M107A1 Rifles - 12808 - 816715012449 - Boss Firearms - BossFirearms.com This Barrett factory magazine features an anti-tilt follower and stress-relieved...$190.00 -
On Sale
Unity Tactical - ModButton Lite 4.5" - MBL-BLK-SF-4.5
Unity Tactical
Now: $78.00Was: $86.00The Unity Tactical ModButton Lite 4.5" (MBL-BLK-SF-4.5) is a compact weapon light activation system designed for use with SureFire Scout Series and compatible weapon lights. The ModButton Lite...Now: $78.00Was: $86.00 -
On Sale
Sig Sauer - Tapered Barrel Muzzle Adapter 7.62mm - TAPER-CAP-762
Sig Sauer
Now: $22.65Was: $24.99The Sig Sauer Tapered Barrel Muzzle Adapter for 7.62mm (TAPER-CAP-762) is an adapter that converts a Sig Sauer tapered (unthreaded) barrel profile to a threaded interface, enabling use of...Now: $22.65Was: $24.99 -
On Sale
Armscor - 44 Mag - 50 Round Box - FAC44M-1N
Armscor
Now: $54.25Was: $62.58ARMSCOR USA ammunition line is made in the USA. ARMSCOR PRECISION ammunition line is made in the Philippines. The company offers a wide selection of competitively priced ammunition and components...Now: $54.25Was: $62.58 -
Out of stockOn Sale
Magpul - DT Carbine Stock - #MAG1377-BLK
Now: $61.70Was: $64.95The DT Carbine stock is a drop-in replacement for firearms equipped with a Mil-Spec receiver extension tube. Featuring dual tensioning technology, combining the best features of the SL and CTR...Now: $61.70Was: $64.95 -
Out of stockOn Sale
HUXWRX - Flash Hider-QD 7.62MM 5/8X24 - #1799
HUXWRX Safety Company
Now: $142.00Was: $175.00The Flash Hider-QD is designed to mitigate flash with unsuppressed. NOTE: Larger caliber mounts are NOT compatible with smaller caliber suppressors. Smaller caliber mounts ARE compatible with larger...Now: $142.00Was: $175.00 -
On Sale
HUXWRX - Flash Hider-QD 223 Remington/556NATO 1/2X28 - 1677
HUXWRX Safety Company
Now: $129.00Was: $159.00The Flash Hider-QD is designed to mitigate flash with unsuppressed. NOTE: Larger caliber mounts are NOT compatible with smaller caliber suppressors. Smaller caliber mounts ARE compatible with larger...Now: $129.00Was: $159.00 -
Out of stockOn Sale
HUXWRX - Muzzle Break QD 7.62MM 5/8X24 - #1574
HUXWRX Safety Company
Now: $138.00Was: $172.00The Muzzle Brake-QD is designed for maximum recoil reduction when unsuppressed. NOTE: Larger caliber mounts are NOT compatible with smaller caliber suppressors. Smaller caliber mounts ARE compatible...Now: $138.00Was: $172.00 -
Out of stock
PRi - Douglas 5.56 Stainless Steel Barrel 18" - 1~7 twist - 05-556-18DB-7-X
Precision Reflex, Inc.
$510.00Douglas 18" Black Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar.   this is...$510.00 -
Out of stock
PRi - M84 Gas Buster® Charging Handle - Military Big Latch - #05-0031-X
Precision Reflex, Inc.
$89.95The Gas Buster® charging handle with Big Military latch is a safety device with ergonomic design that diverts harmful gases, oil and dirt particles away from the shooter.  This is a PRi Patented...$89.95 -
Knights Armament - SR15 E3.2 Field Repair Kit - 121261
Knights Armament Company
$196.43The Knight's Armament SR-15 E3.2 Field Repair Kit (KAC PN: 121261) is KAC's genuine factory field repair/maintenance kit for SR-15 E3.2 rifles. The field repair kit contains the critical spare parts...$196.43 -
Out of stockOn Sale
LMT - Barreled Upper - Combo
LMT Defense
Now: $1,774.43Was: $1,991.95Get your AR-15 ready for action with this complete upper combo, bringing together premium components from leading manufacturers to deliver reliability, accuracy, and durability. LMT Defense - MRP-L...Now: $1,774.43Was: $1,991.95