Lower Parts Kits

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...

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...

LUTH-AR builder parts kit for AR-15 lower. Luth-AR, Lower Parts Builder Kit, No Grip, No Trigger Fits AR-15 Builder Lower Parts Kit (No Fire Control/Grip)

Daniel Defense Complete Lower Parts Kit At Daniel Defense, pride is taken in offering this kit for those interested in assembling their own AR15. Although there are many manufacturers of so-called MIL-SPEC parts, Daniel Defense has gone to great lengths...

Bauer Precision House lower parts kit. All mil-spec components. Includes standard grip. Does not include fire control group. 

The Spike's Tactical LPK exceeds Military Specifications by a long shot while also offering a much better fit and finish. Proudly 100% made right here in the USA. (This Kit Does Not Include Trigger Group) Spike's Tactical, Lower Receiver Parts Kit...