Lower Parts Kits

he Battle Arms Development EBC (enhanced bolt catch) was designed to be a drop-in upgrade to the existing MIL-SPEC bolt catch. Due to the design of this bolt catch, it provides not only a better purchase on the release portion but the lock portion of the...

AR-15 Castle Nut is made of 4140 steel and has a Magnesium Phosphate finish. Made in the USA. Castle Nut, For AR-15, Manganese Phosphate Coated 4140 Steel Fits AR-15 Castle Nut Made in the USA

The MOE (Magpul Original Equipment) Enhanced Trigger Guard is a polymer drop-in replacement for the AR15 / M4 weapons platform. This upgraded trigger guard is easily installed without the use of specialized tools, using two set screws to secure it to the...

The Battle Arms Development Enhanced Pin Set is perfect for adding a little flair to your rifle setup. These takedown pins come in many different colors, allowing you to customize your AR to fit your style. These CNC machined pins fit all AR15/M16/M4...

Inspired by the ODIN Works O2 Lite, the XMR3 is the latest mag release available from ODIN Works. Machined from billet 6061 aluminum and designed to work with KNS pins and the BAD lever. The XMR3 has the largest profile yet, making it easily accessible...

Billet machined from grade five titanium. Re-styled to give a larger target for rapid manipulation and angled to make it easier to engage and disengage after re-loads. Weighs 0.24 oz. and comes in natural finish.

This kit features all of the Seekins Precision manufactured lower receiver parts as well as the pins and springs needed for assembly of your AR15 lower receiver. (Trigger Not Included in Kit.) Seekins Precision, Builder's Kit, Lower Receiver Parts Kit,...

This complete Windham Weaponry Lower Receiver Parts Kit will give you everything needed to build up a stripped lower or keep your AR functioning in the toughest conditions. All highest quality parts, this kit includes: AR hammer with J-pin, hammer...

Our EPC Lower Receivers include the proprietary parts pre-installed from the factory. Other parts and components for assembling your lower receiver are standard AR15 compatible parts. Our EPC Lower Parts Kits include just the parts you need for...

Our EPC Lower Receivers include the proprietary parts pre-installed from the factory. Other parts and components for assembling your lower receiver are standard AR15 compatible parts. Our EPC Lower Parts Kits include just the parts you need for...

All the parts you need to get started on your next Mk3 build. Combine this kit with a buttstock kit to complete your lower group. Compatible with CMMG Mk3 Lowers and most LR308 type lowers. CMMG, Lower Receiver Parts Kit, 308WIN, Black Finish All...

The KAC Ambidextrous Magazine Release is easily installed into any standard, mil-spec AR-15 lower receiver. Requires zero modifications to the host firearm. Knights Armament Company, Ambidextrous Magazine Release Kit, Black Easy Installation Fits...