Designed for the 5.56 NATO cartridge, the Yankee Hill Machine Phantom Comp/Flash Hider’s 5-port design helps to mitigate dust signature when shooting from the prone position by eliminating...

The CMMG AR15 Lower Parts Kit - Gun Builders Kit allows you to pay for only the parts you need and nothing you don't.   To complete your AR-15 lower receiver you you will need to add your...

FailZero is the undisputed pioneer of Nickel Boron technology. When failure is not an option, you can depend on Fail Zero. This Fail Zero BCG is fully assembled and drop-in ready for most Mil-Spec...

This Aero Precision Carbine Buffer Tube Kit is built around a mil-spec 7075-T6 aluminum buffer tube that can take the punishment. Features: Mil-Spec 7075-T6 Aluminum Buffer Tube,...

A Toolcraft Nickel Boron BCG is, hands down, one of the best Nickel Boron BCGs on the market today. The bolt carrier group is one of the most important AR15 parts, critical to the safety and proper...

This 223 Wylde chambered 18" AR15 barrel is machined from 416R Stainless Steel with a bead blasted finish. Ballistic Advantage Premium Series barrels feature a Fail Zero Nickel Boron coated M4 feed...

This Aero Precision Upper Receiver is fully assembled with the dust cover and forward assist assemblies already installed. Forged from 7075-T6 aircraft aluminum and then MIL-SPEC hard coat...

The National Firearms Act regulates the configurations of some firearms assembled with barrels under 16” long. Know the NFA laws in your state before purchasing this item. This Ballistic...

Designed for the 5.56 NATO cartridge, the Yankee Hill Machine Phantom Comp/Flash Hider’s 5-port design helps to mitigate dust signature when shooting from the prone position by eliminating...

This Toolcraft 308 Bolt Carrier Group is designed for use in DPMS pattern AR10 rifles chambered in the 308 family of calibers. It is not for use with 6.5 Creedmoor or DPMS G2. It is a full auto BCG...

This premium CMMG AR15 Lower Parts Kit includes pistol grip, fire controls and all parts and pins necessary to complete a stripped lower. CMMG uses color coded bags for the parts to help you keep...

Toolcraft is an OEM manufacturer of bolt carrier groups (BCGs) for many firearms makers. These companies know they can trust Toolcraft quality and are proud to put their logo on Toolcraft BCGs...