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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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 -
ARISAKA - MCX Zero Retention Clamp - ZRC-MI-300-SLIM
Arisaka
$49.00The Patent Pending Arisaka Zero Retention Clamp (ZRC) greatly reduces zero shift for lasers and iron sights that are mounted on the handguard of the MCX Virtus and Spear LT. This version is designed...$49.00 -
Arisaka - Rail Slider LRF/Spotter Adapter - RS-LRFSPOT
Arisaka
$20.00The LRF/Spotter Adapter is the utility piece of the Arisaka Rail Slider System. It is intended to be used with the Rail Slider on tripods, and is designed to be attached to any shooting accessory...$20.00 -
Arisaka - Rail Slider Barricade Stop - RS-BARRICADE
Arisaka
$45.00The Rail Slider Barricade Stop is an ARMS 17S compatible meat tenderizer and QD sling swivel socket which is sandwiched between the Arisaka Rail Slider and your bipod. The pointy end has plenty of...$45.00 -
ARISAKA - MCX Zero Retention Clamp - Fits Sig Sauer MCX - LT Standard Handguard ZRC-SPEAR-LT
Arisaka
$49.00The Patent Pending Arisaka Zero Retention Clamp (ZRC) greatly reduces zero shift for lasers and iron sights that are mounted on the handguard of the MCX Virtus and Spear LT. This version is designed...$49.00 -
Arisaka - Hand Stops HS-M
Arisaka
$30.00 - $35.00The Patent Pending Arisaka Hand Stop is a continuation of Arisaka's low profile, minimal control accessories. The primary goal of this accessory is to aid the user in pulling their rifle into their...$30.00 - $35.00 -
On Sale
B5 Systems Bravo Stock Assembly Milspec - Coyote Brown BRV-1086
B5 Systems
Now: $57.95Was: $61.00The B5 Systems Bravo Stock Assembly for AR Milspec buffer tubes in Coyote Brown (BRV-1086) delivers the same enhanced ergonomics and rugged reliability of the Bravo stock in a tactical Coyote Brown...Now: $57.95Was: $61.00 -
On Sale
Aimpoint - 3XMAG-1 Magnifier 39MM FlipMount And TwistMount Base - 200334
Aimpoint
Now: $1,441.00Was: $1,601.00The Aimpoint 3XMag-1 Magnifier is a powerful 3x magnifying module designed to meet the demands of professional end-users. This magnifier can be paired with an Aimpoint red dot sight to enhance target...Now: $1,441.00Was: $1,601.00 -
On Sale
Aimpoint - TwistMount Ring & Base - 12234
Aimpoint
Now: $235.00Was: $261.00TwistMount Ring & Base: Complete Quick Release Mount for all Aimpoint® magnifiers and CEU. Fits on Picatinny rail (MIL-STD 1913). Screws and Allen key included. This Aimpoint Red Dot Sight...Now: $235.00Was: $261.00 -
Spuhr - 34mm Cantilever Mount 6 MIL - 1.18" Gen 3 - SP-4601C
Spuhr
$500.00Spuhr SP-4601C: 34mm Cantilever Mount 6 MIL - 1.18" 6 MIL/20,6 MOAHeight: 30 mm/1.18”Clearance: 8 mm/.314" (from the bottom of the tube to bridge of the mount body)Length: 120 mm/4.72” (body)/130...$500.00 -
On Sale
Surefire - 4-Prong Flash Hider - 5.56mm - 1/2x28mm - FH556RC-1/2-28
Surefire
MSRP: $199.00Now: $179.00Was: $199.00The SureFire 4-Prong Flash Hider — 5.56mm 1/2x28 (FH556RC-1/2-28) is SureFire's aggressive 4-prong flash hider for 5.56mm rifles, designed to provide extremely effective flash reduction while...MSRP: $199.00Now: $179.00Was: $199.00 -
AB Suppressor - Raptor Muzzle Thread Adapter - TA-1/2-28
AB Suppressor
$26.00The AB Suppressor Raptor Muzzle Thread Adapter with 1/2-28 threads (TA-1/2-28) converts your Raptor series suppressor to a 1/2-28 thread pitch, enabling use on 5.56/.223 AR-15s and other platforms...$26.00