Lower Parts Kits

Colt High Wear Parts Repair Kit - AR15/M4 Maintain peak reliability with the Colt’s Manufacturing High Wear Parts Repair Kit for AR15/M4 platforms. Engineered to keep your rifle running smoothly through intense use, this kit includes the most...

Colt Lower Field Repair Kit - AR15/M4 Prepare your AR15/M4 for anything with the Colt’s Manufacturing Field Repair Kit—an essential collection of mil-spec replacement parts designed to keep your rifle running in peak condition. Whether...

Colt Lower Parts Kit - AR15/M4 Get your AR build one step closer to complete with the Colt’s Manufacturing Lower Parts Kit for AR15/M4 platforms. Precision-engineered by one of the most trusted names in firearms, this kit includes the essential...

KAK Industry K-SPEC Buffer and Spring - H1 - 3.8 oz   The K-SPEC Buffer was developed with specific goals in mind- Reducing felt recoil and providing faster follow up shots. With modern technology being applied to firearms, you're likely aware...

KAK AR-15 "LITE" Lower Parts Kit - No Fire Control Group The KAK AR-15 "LITE" Lower Parts Kit is perfect for those looking to install an aftermarket match trigger in their AR-15 build. This kit includes all essential KAK-produced parts but excludes the...

KAK AR-15 Lower Parts Kit - Red Bag (No Grip or Trigger Guard) The KAK AR-15 Lower Parts Kit provides all the essential components to complete your AR-15 lower receiver, while leaving room for user customization. This kit excludes the grip and trigger...

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...

Sons of Liberty Gun Works Enhanced Blaster Guts - B5 Lower Parts Kit Lower Parts Kit made from only the highest quality Mil-Spec or better components. The SOLGW Bolt Catch and Safety Selector are a Mil-Spec AISI8620 investment casting per the USGI TDP...

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...