Aero Precision Bolt Carrier Group, 5.56, Aero Logo, 9310 Bolt, Black Nitride Finish APRH100615C

This high quality bolt carrier group is a valuable addition to your AR15 build. 11.52 oz.

5.56 CHROME LINED PHOSPHATE BCG:

• Available with or without “A” Logo
• M16-cut carrier
• Machined from 8620 steel
• Carrier has forward assist serrations
• Mil-Spec phosphate coating
• Properly staked gas key
• Chrome lined gas key and bolt channel
• 5.56 Bolt is machined from Carpenter 158 tool steel
• Shot peened
• HPT tested/MPI marked
• Black o-ring insert on extractor
• High quality BCG

5.56 NICKEL BORON BCG

• 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

5.56 BLACK NITRIDE BCG

• With or Without Aero 'A' Logo
• M16-cut carrier
• Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt)
• Carrier has forward assist serrations
• Black Nitride Finish - advanced lower friction coating that minimizes the need for lubricants and cleaning
• Properly staked gas key
• Shot peened