Lower Parts

AX556 Billet Upper/Lower Receiver Set 15.5" Handguard - FDE 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...

AX556 Billet Upper/Lower Receiver Set 15.5" 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...

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...

No one likes to ruin a trip to the range when something goes wrong with your rifle. The AR15/M4E1 Field Repair Kit features common parts that may rattle loose or break. Carry one in your range bag and always have what you need to get your rifle up and...

No one likes to ruin a trip to the range when something goes wrong with your rifle. The AR15/M4E1 Field Repair Kit features common parts that may rattle loose or break. Carry one in your range bag and always have what you need to get your rifle up and...

Sig Sauer MCX/MPX Stock Adapter Low Profile Tube - 1913 Folding - Black  This low-profile folding stock adapter assembly attaches to your MPX or MCX to allow for a traditional M4 stock to slide onto the low-profile buffer tube. This unique...

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...