AR-15/M16 NICKEL BORON BOLT CARRIER GROUP

FEATURES:

• 5.56mm nickel boron coated bolt carrier group
• Fail zero coated using Exo technology
• High pressure tested
• Magnetic particle inspected
• SPT HPT/MPI marked bolt
• Carrier is machined from 8620 tool steel
• Bolt is 158 carpenter steel
• 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
• Mil-spec extractor spring, black extractor insert, and viton o-ring
• Tool steel extractor
• Spike's tactical spider logo on ejection port cover side
• All NFA rules apply

BENEFITS:

• Nickel boron coating provides a durable and smooth finish
• Nickel boron is smoother than hard chrome, easier to clean, and allows the rifle to run smoother
• Coating will not chip, peel, or flake off
• Spikes Tactical Lifetime Warranty
• Fully staked carrier key ensures that the key will not loosen
• Mil-spec extractor spring, insert, and o-ring allow for positive extraction