Parts & Accessories
Shop AR-15 and AR-10 parts and accessories from Boss Firearms. Our parts inventory includes LMT upper and lower receivers, Proof Research carbon fiber barrels, Forward Controls Design components, Geissele triggers, Magpul furniture, BCM parts, SureFire lights, and much more. Whether you're building a new rifle or upgrading your current setup, we carry the hard-to-find components trusted by military, law enforcement, and serious civilian shooters.
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Out of stock
Remington 870 Super Mag Receiver Assembly 2.75"-3" 12ga w/ Mag Tube
Remington
$100.00This is a Remington 870 Super Mag stripped receiver assembly compatible with 2.75” – 3.5” 12ga components. This receiver was removed from factory new firearms and the serial number shown in the above picture may not be the exact one you...$100.00 -
Out of stock
Remington 870 Magnum Receiver Assembly 2.75"-3" 12ga w/Mag Tube
Remington
$75.00This is a Remington 870 Magnum stripped receiver assembly compatible with 2.75” – 3” 12ga components. This receiver was removed from factory new firearms and the serial number shown in the above picture may not be the exact one you...$75.00 -
Out of stock
Volquartsen - Mini Mamba LLV for Ruger MK IV 22LR 3" #VC4LLV-0025
Volquartsen
$502.00This is a new Volquartsen Mini Mamba 3” upper receiver compatible with all Ruger Mark IV & Mark IV 22/45 pattern components. This upper will not ship with a bolt assembly. This upper has it all for your Ruger MK IV. Not only is it...$502.00 -
FCD Forward Controls Design 5.56 Bolt Catch Dimpled ABC/R v3 AA
Forward Controls Design, Inc
$58.90The Forward Controls Design ABC/R v3 Dimpled 5.56 Bolt Catch (ABC/R v3 AA) is the dimpled-texture (all-around/AA) variant of FCD's ABC/R v3 Augmented Bolt Catch for AR-15/M16 receivers. The all-around dimpled texture provides maximum tactile feedback...$58.90 -
Out of stock
FCD Forward Controls Design Ambidextrous Charging Handle LPVO #ACF-L
Forward Controls Design, Inc
$118.75This is a new FCD (Forward Controls Design) Ambidextrous Charging Handle. ACF-L is an AR15/M16 ambidextrous charging handle based on our ACF. Whereas with the ACF, we kept the T handle nearly the same length as that of the TDP...$118.75 -
Dead Air Armament Key Mount Muzzle Brake 45 Caliber 5/8x24 DA161
Dead Air Armament
$75.00The Dead Air Key Mount Muzzle Brake (DA161) in .45 caliber with 5/8x24 thread pitch is a precision-machined muzzle device that combines functional recoil reduction with Dead Air's KeyMo quick-detach suppressor mounting capability. Designed for .45 ACP...$75.00 -
Dead Air Armament KeyMicro Flash Hider 5/8x24 9mm DA116
Dead Air Armament
$75.00The Dead Air KeyMicro Flash Hider (DA116) with 5/8x24 thread pitch is a compact muzzle device purpose-built for 9mm pistol-caliber carbines and suppressor hosts. Designed as the mounting adapter for Dead Air's KeyMicro suppressor system, this flash hider...$75.00 -
Dead Air Armament Xeno Flash Hider 5/8x24 DA122
Dead Air Armament
$75.00The Dead Air Xeno Flash Hider (DA122) with 5/8x24 thread pitch is a precision-machined muzzle device designed as the foundation of Dead Air's Xeno suppressor mounting system. The Xeno Flash Hider serves as both a functional flash-reducing muzzle device...$75.00 -
Heckler & Koch Three Position Retractable Buttstock 227901
Heckler & Koch
$732.50The Heckler & Koch Three-Position Retractable Buttstock (HK PN: 227901) is HK's genuine factory three-position adjustable/retractable buttstock for HK416, MR556, MR762, and compatible AR-pattern rifles. The three-position design allows the buttstock...$732.50 -
HK Heckler & Koch Fixed Side Folding Stock for SP5's 261249
Heckler & Koch
$320.00The Heckler & Koch Fixed Side Folding Stock for SP5 (HK PN: 261249) is the genuine HK factory fixed-position side folding stock for the SP5 and SP5K 9mm semi-automatic platforms. This folding stock mounts to the SP5's rear receiver and folds to the...$320.00 -
LanTac USA M-Spec Carbine Gas Tube 01-MSPEC-GT-CRBN
LanTac
$18.99This is a new LanTac USA LLC M-Spec Carbine Gas Tube. It fits AR 15 with carbing length- gas system, comes complete with gas tube roll pin, is laser engraved, and manufactured from 306 stainless steel. The manufacturer part number...$18.99 -
Q LLC - Mini Fix Multi Tool TOOL-MULTI-FIX
Q LLC
$69.00Q LLC Mini Fix Multi Tool TOOL-MULTI-FIX This is a handy tool to stick in your bag when hitting the range or work bench. Use it to swap your barrel, install accessories, remove your silencer, tighten scope rings, open a beer... You get the...$69.00