AR-15 Parts

KAC's iconic Ribbed Rail Panels have seen use all over the globe on US military M4 Carbines. The lightweight polymer panels are ribbed for an enhanced grip, and help insulate the support hand from...

LMT Lewis Machine & Tool DMR Buttstock Designated Marksman Rifle buttstock. Designed for .308 caliber rifles with carbine extension tubes. The DMR stock has comb height and length of pull adjustments...

The KAC M4 RAS (Rail Adapter System) was developed for use on the US military’s M4 Carbine, and with over 1 million rails issued to date, it is one of the most battle proven designs available for the...

The KAC M5 RAS (Rail Adapter System) was developed for use on the US military?s M16A4, and with hundreds of thousands of rails issued to date, it is one of the most battle proven designs available...

The LMT 5.56 direct impingement bolt carrier group will fit in any mil-spec ar15 upper receiver and is made of high-quality materials with durability in mind. This bolt carrier features...

The BT10-LW17 V8 Atlas Bipod mounts directly to any 1913 style Picatinny rail via the included ADM-170-S lever. It is comprised of 6061-T6 aluminum that is Mil-Spec Type III hard coat anodized and...

The Sons of Liberty Gun Works AR-15 lower parts kit comes with almost everything you need to finish building your lower receiver. Also known as the blaster starter kit, the only components missing...

This is a new Lewis Machine & Tool 16-inch .300 Blackout MRP barrel assembly. It features a chrome lined bore with a 1:7 right hand twist. Designed for the LMT monolithic receiver, this barrel...

The LMT Defense 11.5" Chrome Lined 5.56mm MRP Barrel Assembly (L7TA1B) is engineered specifically for LMT's Monolithic Rail Platform (MRP) upper receivers. This 11.5-inch, 5.56×45 (.223) barrel...

Complete your build with only the best lower parts kit available. This is the same kit that LMT’s world famous weapons are built with so why wouldn’t you want it in your rifle? 100% American...

SIG SAUER factory aluminum minimalist plus, folding stock installs easily on your MCX/MPX via the receiver's 1913/picatinny interface. Overall length - 9"Overall height - 4.5"Butt-pad width - ...

The KAC Medium URX II free floating forend features an integral, flip-up front sight assembly that folds flush with the continuous top rail when not in use, creating a seamless look. Full length...