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
VKTR Industries 5.56 Combat Match Bolt Assembly - Precision Machined 9310 Alloy Steel V-2006-0701-001-RP
VKTR Industries
$149.00The VK Combat Match Bolt offers unyielding combat reliability with the finesse, precision and accuracy of a match prepared part. Specifically designed for the greatest accuracy potential possible without sacrificing reliability in all conditions. This...$149.00 -
Out of stockOn Sale
Dead Air Armament Key-Mo Hub Mount (1.375x24) #DA428
Dead Air Armament
Now: $199.00Was: $249.00If you're one of the many owners of a SilencerCo(R) Omega and have ever longed for a simpler and more reliable mount, your salvation is here. The Key-Mo(TM) also gives your SilencerCo Omega a much-needed upgrade. Simply unscrew your existing mount, and...Now: $199.00Was: $249.00 -
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 for the MCX Virtus chambered in 5.56 and 300BLK, and...$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 with a 1/4-20 threaded mount, such as laser range finders,...$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 bite to provide additional stability against the...$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 for the MCX Virtus chambered in 5.56 and 300BLK, and...$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 shoulder, enhancing control and recoil mitigation. The...$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 finish. The Bravo provides an extended cheekweld surface...Now: $57.95Was: $61.00 -
Out of stock
Stern Defense - MAG-AD9 9mm Luger Glock 9mm/.40 S&W Mag Well Adaptor - #MAGAD9
Stern Defense
$189.00This is a new Stern Defense MAG-AD9 magazine well adaptor compatible with AR pattern firearms chambered in 9mm Luger. Convert your standard mil spec AR 15, M4, M16 lower assembly to use 9mm and .40 S&W Glock Magazines! The Mag-AD series...$189.00 -
Out of stock
Ruger - Standard MK IV Stubby Pencil Profile 4.5” Barreled Receiver .22 LR - VCSCU‑0037
Ruger
$30.00This is a factory new never fired Ruger MK IV stripped barreled receiver chambered for .22 LR. This upper comes with adjustable sights and a 4 ½-inch stubby pencil profile barrel. The push-button takedown makes switching uppers easier than...$30.00 -
Out of stockOn Sale
Aimpoint - 6XMAG-1 Magnifier 39MM FlipMount and TwistMount Base - #200340
Aimpoint
MSRP: $1,604.00Now: $1,443.00Was: $1,604.00The Aimpoint 6X Magnifier is your go-to solution for extended-range aiming and observation when used with Aimpoint Micro T-2/H-2 and Aimpoint CompM5/M5s/M5b red dot sights. This versatile optical module is designed to provide clear, crisp visuals at...MSRP: $1,604.00Now: $1,443.00Was: $1,604.00Qty in Cart: 0Quantity:Price:MSRP: $1,604.00Now: $1,443.00Was: $1,604.00Subtotal: -
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 acquisition at longer distances or utilized as a 3x...Now: $1,441.00Was: $1,601.00