The FailZero M16/M4 BCG No Hammer is a complete bolt carrier group designed for AR-15 platform rifles chambered in 5.56 NATO/.223 Remington.
- Part Type: M16/M4 Profile Bolt Carrier Group (Full-Auto Profile)
- Compatible Firearms: AR-15, M16, M4 (5.56 NATO/.223 Remington)
- Material: Carpenter 158 Steel Bolt, 8620 Steel Carrier
- Finish: EXO Nickel Boron Coating (Matte)
- Installation: Drop-In
- Includes: Bolt Carrier, Bolt Assembly, Gas Key, Cam Pin, Firing Pin (No Hammer)
