Failzero Lightweight Bolt Carrier Group
Carrier Weighs 6.4 oz/ complete BCG weighs 9.2 oz
Compatible with all MilSpec AR Platforms
Components are EXO NIB
Compatible with 5.56, .223 and .300...
Nickel Boron M16 Bolt Carrier Group
Shot Peened Bolt
Gas Key Hardened to USGI Specifications
Gas Key Grade 8 Hardened Fasteners
Gas Key Staked Per Mil-Spec
Tool Steel Extractor
Extractor...