Genuine Spike's Tactical Nickel Boron coated M16 Bolt Carrier Group. 

Features

• Machined from 8620 Tool Steel (Carrier) and 158 Carpenter Steel (Bolt)
• 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.
• Bolt is shot Peened and HPT/MPI
• Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring
• Tool Steel Extractor

Included

• Complete Nickel Boron Plated M-16 BCG
• Spike's Tactical Lifetime Warranty