The Aero Precision Nickel Boron Bolt Carrier Group is a substantial upgrade from a standard BGC. Its NiB coating reduces friction on sliding surfaces and prevents carbon build-up making cleaning a much easier task. MIL-SPEC dimensions ensure correct component function and reliability.

Features:

• No Aero 'A' Logo
• Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt)
• Carrier has forward assist serrations
• Shrouded firing pin
• Nickel Boron Coating inside and out (Bolt, Carrier, and Gas Key)
• Forged Mil-Spec gas key attached with Grade 8 hardware and Properly staked.
• 5.56 Bolt is shot Peened and MPI
• Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring
• Tool Steel Extractor
• High quality BCG