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
LaRue Tactical - DOD Surplus QD ACOG Mount - #LT799
LaRue Tactical
$125.00This is a new old stock government surplus LaRue Tactical LT799 locking QD ACOG mount. With these items being military surplus we received both the NSN number which is 1005-01-606-1847 and the DTID is M122303258T029 (reference below)...$125.00 -
Out of stock
Stern Defense - H2S NIB Hybrid 2 Stage Drop in Trigger - #STNH2SNIBD1M
Stern Defense
$185.99The Stern Defense H2S Hybrid 2 Stage Drop-In Trigger Group is designed specifically for pistol caliber carbines and defensive shooters. This hybrid trigger combines the durability of Mil-Spec triggers with the responsiveness of competition-grade...$185.99 -
Out of stock
Stern Defense - RAB-AD Mini Rapid Attach Buttstock Adapter - #RABADMINID1M
Stern Defense
$139.99Stern Defense Rapid Attach Mini buttstock adaptor compatible with AR pattern buffer tube stocks. The Rapid Attach Buttstock Adapter Mini allows you to greatly reduce the length of your firearm for compact storage and easy transportation without any...$139.99 -
Out of stock
Colt - Mil-Spec BCG 223Rem/556NATO - #SP64028
Colt
$199.99Factory Colt bolt carrier assembly for your AR15, M16 or M4 is the only bolt carrier manufactured to truly meet and exceed all Mil Spec standards. Compatible with full-auto or semi-auto receivers. The bolt carrier is MPI tested & marked to give you...$199.99 -
Out of stock
Heckler & Koch - AR-15/HK416 Carbine Buffer Tube black - 227474
Heckler & Koch
$45.00The Heckler & Koch AR-15/HK416 Carbine Buffer Tube — Black (HK PN: 227474) is the genuine HK factory mil-spec carbine buffer tube (receiver extension) for HK416 and compatible AR-15/M4 pattern rifles in black. The HK buffer tube is manufactured to...$45.00 -
Radian Weapons - Raptor SD Ambidextrous Charging Handle - R0006
Radian Weapons
$124.95The silencer-optimized Raptor-SD features a ported shaft designed to redirect gasses down and forward, away from the shooter's face when shooting suppressed. Its ambidextrous design allows rapid palm blading or finger-thumb charging of the weapon,...$124.95 -
Out of stock
Magpul - Rail Sling Attachment Fits ASAP Sling Plate - #MAG502-BLK
Magpul Industries
$28.45The RSA provides a low profile forward sling attachment point for the Magpul MS2 or MS3 and other clip-in systems. Made from nitrocarburized steel for wear and corrosion resistance, the RSA attaches to any 1913 Picatinny rail and has been proven to...$28.45 -
Out of stock
Spuhr Aimpoint T-2 Magnifier Mount H57mm/2.25" PIC - #RDF-20225K
Spuhr
$464.99The world's toughest Red Dot Sight mount - the preferred choice by the elite teams. Models available in various heights for Aimpoint Micro series. Spuhr's new light-weight tough-as-nails form factor! Specifications: Footprint...$464.99 -
On Sale
Magpul - Cheek Riser .25" - MAG325-BLK
Magpul Industries
Now: $18.95Was: $19.95The Magpul Cheek Riser 0.25" (MAG325-BLK) is Magpul's precision-thickness cheek riser for use with Magpul stocks (CTR, STR, MOE, and similar) to raise the shooter's cheek weld height when using magnified optics or NVG-compatible setups that sit higher...Now: $18.95Was: $19.95 -
Out of stockOn Sale
Q - Whistle Tip XL - #ACC-WHISTLETIP-XL
Q LLC
Now: $115.00Was: $125.00The 8.6 BLK WHISTLE TIP is a blast mitigation device (BMD) for our Cherry Bomb muzzle brake. It also serves as a Cherry Bomb thread protector for the poors who don't / can't own a silencer. As you've come to expect, the WHISTLE TIP...Now: $115.00Was: $125.00 -
Out of stock
Knight's Armament - SR-15 E3.2 Bolt Assembly - #122054
Knights Armament Company
$379.50The SR-15 E3.2 Enhanced Bolt is engineered to set new standards for durability and longevity, even under the most demanding conditions. Equipped with dual ejectors, it greatly reduces wear and extends its lifespan compared to traditional single ejectors,...$379.50 -
Two Vets Tripods - 55MM Dual Tension Ballhead W/ Arcalock Dual Clamp (Arca Swiss and Picatinny) - 55MMDUAL419
Two Vets Tripods
$300.00We have teamed up with Area 419 to now offer a Area 419 Arcalock QD on top of our ballheads. This clamping system when run in conjunction with the Area 419 Arcalock rail will alleviate the unwanted forward movement of the rifle while clamped into...$300.00