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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Geissele Automatics - 30mm 1.54" AR-15 SOPMOD Vortex 1-6x Mount - 100025597
Geissele Automatics
$279.99This AR-15 Scope Mount is part of the Geissele® SOPMOD Certified Series, designed for use by elite military and counter-terrorism units within the U.S. Special Operations Command (USSOCOM). The...$279.99 -
Out of stock
Magpul - Glock OEM 9mm 24 rd Magazine - #47464
Magpul Industries
$40.00Each GLOCK magazine is constructed from a hardened steel insert encased in high tech polymer to protect the magazine and prevent deformation, even when dropped from a great height. The high quality...$40.00 -
LMT Defense - 13.5" Chrome Line 7.62 NATO Barrel - R-LM308B413
LMT Defense
MSRP: $697.00$646.20The LMT Defense 13.5" Chrome Lined 7.62 NATO MRP-H Barrel (R-LM308B413) is a mil-spec chrome-lined heavy-profile .308 barrel designed for the LMT MWS (Modular Weapon System) MRP-H upper receiver...MSRP: $697.00$646.20 -
Colt - Upper Receiver 223REM/556NATO - SP63528
Colt
$179.99The durability, reliability and excellent build quality of Colt uppers will provide years of service you can count on. M4 Feed Ramps Forward Assist Upper Receiver$179.99 -
Proof Research - 12.5" 300BLK LMT Carbon Fiber Barrel - 100523
Proof Research
$999.99The Proof Research 12.5" .300 Blackout LMT Carbon Fiber Barrel (100523) is a precision drop-in replacement barrel for LMT MRP/MWS quick-change barrel systems chambered in .300 Blackout. The 12.5-inch...$999.99 -
Out of stock
Noveske - 12.5" Leonidas Barrel 223 Rem/556NATO - #07000200
Noveske
$380.00UPC 840906111963 Manufacturer Noveske Manufacturer Part # 07000200$380.00 -
Noveske - 11.5" Commando Barrel 223 Rem/556NATO - 07000050
Noveske
$360.00The barrel ships with a gas block. This barrel is designed for our gas block that is 1″ long (INCLUDED). A standard front sight base is 1.9″ long and WILL NOT FIT. Barrel installation should be...$360.00 -
Noveske - 10.5" 556NATO Barrel 1:7 Twist Carbine Length Gas System - 07000048
Noveske
$340.00Noveske is proud to manufacture premium barrels for all types of builds. This barrel ships with gas block. This barrel is designed for the Noveske gas block that is 1" long (INCLUDED). A standard...$340.00 -
Forward Controls Design - Carbine Receiver Extension - REF
Forward Controls Design, Inc
MSRP: $70.00$66.50The Forward Controls Design Carbine Receiver Extension (REF) is FCD's precision-machined standard carbine buffer tube for AR-15/M16 lower receivers. The REF is machined to tighter tolerances than...MSRP: $70.00$66.50 -
On Sale
HUXWRX - Muzzle Break-QD 223 Remington/556NATO 1/2X28 - 1599
HUXWRX Safety Company
MSRP: $177.00Now: $143.00Was: $177.00The 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...MSRP: $177.00Now: $143.00Was: $177.00 -
LMT Defense - AR-15 Barrel 8.25" 300 Blackout - L7BX1B
LMT Defense
MSRP: $598.00$554.40The LMT Defense AR-15 8.25" .300 Blackout MRP-L Barrel (L7BX1B) is LMT's most compact .300 Blackout barrel assembly, designed for ultra-short SBR, AR pistol, and suppressed builds on the LMT MRP-L...MSRP: $598.00$554.40 -
Out of stock
Knight's Armament - Precision Base for Harris "S" Bipods QD for MIL-STD-1913 - 31761
Knights Armament Company
$150.00The Knight's Armament Precision QD Base for Harris "S" Bipods — MIL-STD-1913 (KAC PN: 31761) is KAC's Quick-Detach precision bipod base for mounting Harris "S"-series bipods to MIL-STD-1913 Picatinny...$150.00