Lower Parts

AX556 Billet Upper/Lower Receiver Set 14" Handguard - Black The Radian AX556 Billet Upper/Lower Set delivers precision machining, fully ambidextrous controls, and cutting-edge ergonomics, making it a top-tier foundation for serious AR builders. Chambered...

The design philosophy behind the Radian Model 1 is simple: use the highest quality raw materials, most precise CNC machining equipment, and best components available to create a weapon that seamlessly blends form and function. Beyond quality and...

Armaspec AR-15 Stealth Recoil Spring GEN 4 (AR10)

The design philosophy behind the Radian Model 1 is simple: use the highest quality raw materials, most precise CNC machining equipment, and best components available to create a weapon that seamlessly blends form and function. Beyond quality and...

PWS Enhanced Short Steel Body Buffer for .308 Platforms. H2 Weight. 4.4 oz

MCX/MPX FOLDING STOCK ADAPTER - 6 POSITION LOW PROFILE - COYOTE This stock adapter allows you to use your favorite AR-15 carbine adjustable stock on your MCX or MPX. Features a 6-position mil-spec sized low profile carbine-style receiver extension tube...

The TRIARC Systems TRACK 2.0 Rifle Barrel Kit features a 13.9" TRACK 2.0 Barrel that is optimized for the TRIARC Systems Mil-spec buffer tube, H1 Buffer and Sprinco Blue Buffer Spring. Also included is a Mil-Spec End Plate and Castle Nut. Together, these...

Radian Weapons - AX556 A-DAC Lower Receiver - Radian Brown Machined from billet 7075-T6 aluminum, the A-DAC 15 is a fully ambidextrous lower receiver for AR15-style firearms. In addition to the Talon Ambidextrous Safety Selector, left-side magazine...

Sig Sauer - MCX/MPX Minimalist Plus Locking Folding Stock SIG SAUER factory aluminum locking minimalist plus, folding stock installs easily on your MCX/MPX via the receiver's 1913/Picatinny interface.

SureFire OBC Replacement Main Drive Spring This Main Drive Spring is a replacement or spare for the one that comes with the Surefire SF-OBC-556 Optimized Bolt Carrier Group for M4/M16/AR-Variant Rifles & Carbines. *Buffer pictured is not included.

Sig Sauer - Folding MCX/MPX Visor Stock SIG SAUER factory replacement folding visor stock installs easily on your MCX/MPX via the receivers 1913 interface. CAUTION: Many States and localities regulate the use and/or possession of collapsible and...

Radian Weapons AX556 Stripped Billet Lower - Model 1 / A-DAC 15 Machined from billet 7075-T6 aluminum, the A-DAC 15 is a fully ambidextrous lower receiver for AR15-style firearms. In addition to the Talon Ambidextrous Safety Selector, left-side magazine...