Lower Parts Kits

High quality components and precise manufacturing make CMMG parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on. CMMG, Receiver...

Forward Controls Design RBF Reinforced Buffer Retainer - Stainless RBF (Reinforced Buffer retainer, Forward Controls) is a strengthened AR buffer retainer machined with Swiss machines from 17-4 stainless steel bar stock, and heat treated to H900...

Doublestar Corp., OOPS! Replacement Kit, For Most Commonly Lost Parts Replacement parts For Builds or Repairs Pins, springs, and detents Sometimes parts go missing or need replacement. Don't be caught unprepared with a useless rifle and stand...

The lower parts kit helps you to build a custom AR15 from the ground up. Mil-spec dimensions and coating ensure the highest quality and correct component interface. This lower parts kit does not include the fire control group, pistol grip or trigger...

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...

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...

High quality AR-15 Enhanced Lower Parts Kit from ERGO comes with all the replacement parts to upgrade your AR-15 lower, with the exception of the fire control group. Comes with the Original ERGO Grip (AT) Aggressive Texture included. Ergo Grip, Enhanced...

LWRCI's Advanced Trigger Guard is appropriately sized for use with gloved hands. Easy to install, this lightweight trigger guard is constructed of a glass-filled reinforced nylon making it nearly indestructible.

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. Spike's Tactical, Lower Receiver Parts Kit Standard, 223 Rem/556NATO, Rounded Hammerand...

Sons of Liberty Gun Works Blaster Guts Lower Parts Kit Upgrade your firearm with the Sons of Liberty Gun Works Blaster Guts Lower Parts Kit – the ultimate combination of premium quality, durability, and performance. Made from only the highest...

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