Lower Parts

FN M16 Military Collectors Series Stripped Lower Receiver The FN15 Military Collector M16 Stripped Lower Receiver is a precision-forged foundation for building a truly authentic M16-style rifle. Crafted by FN America—the same manufacturer trusted...

The M4E1 Complete Lower Receiver is the perfect base for your custom AR15 build. This complete lower features our new M4E1 Lower Receiver with an A2 Grip and M4 Stock. Save when you buy it complete and let our specialists do the installation for...

4th Generation N4 Lower Receiver - Black Anodized The Noveske 4th Generation N4 Lower Receiver is expertly machined from 7075-T6 aluminum, delivering unmatched strength, precision, and ergonomic refinements. Designed for tactical, competition, and duty...

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

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.