- Machined to Mil-Spec Standards
- Properly Staked Gas Key
- Complete Bolt Carrier Assembly, Drop-In Ready
The AR-STONER™ Bolt Carrier Assembly is the perfect choice for your next AR build!
This AR-STONER™ Bolt Carrier Group has been machined to Mil-Spec standards and magnetic particle tested to ensure the assembly is free of any imperfections. This drop-in ready BCG features a properly staked gas key and is an affordable way to instantly increase the performance of your AR-15.