FailZero AR-15 Bolt Carrier Group 6.8 SPC Nickel Boron No Hammer

The FailZero AR-15 Bolt Carrier Group is a fully assembled bolt carrier group designed for AR-15 rifles chambered in 6.8 SPC. It is built to fit most properly chambered Mil-Spec upper receivers and is intended as a direct replacement or upgrade for the bolt carrier assembly.

The critical components are coated with EXO Nickel Boron, a finish that provides dry lubricity, wear resistance and corrosion resistance. The coating is described as easy to clean. The extractor hardware includes a heavy spring, a silicone insert and an o-ring intended to increase extraction tension. Nickel Boron treated parts include the bolt and extractor, M16 cut bolt carrier, cam pin, carrier key and firing pin.

• Platform: AR-15
• Caliber: 6.8 SPC
• Finish: Nickel Boron (EXO)
• Color: Silver
• Fit: Mil-Spec AR-15 upper receivers chambered in 6.8 SPC
• Assembly: Fully assembled
• Extractor: Heavy spring, silicone insert, o-ring
• Treated parts: Bolt, extractor, M16 cut bolt carrier, cam pin, carrier key, firing pin