Spikes Tactical 5.56 AR-15 Bolt Carrier Group - Nickel Boron

Your bolt carrier group is one of the most critical parts of your build -- don't buy an imitation. The Spike's Tactical AR-15/M16 Nickel Boron Bolt Carrier Group is made from 8620 steel with a 9310 tool steel bolt, finished entirely in nickel boron.

Features:

• M16 cut, full-auto carrier, 8620 tool steel
• Chambered in 5.56 NATO
• 9310 tool steel bolt, shot peened
• Nickel boron finish on carrier, bolt, extractor, and cam pin
• Extractor with upgraded O-ring for increased tension
• Properly staked gas key
• High pressure tested and magnetic particle inspected
• Spike's Tactical Spider Logo engraved on the carrier
• 11.6 oz weight

Nickel boron is much easier to clean than phosphate and can help a firearm run more reliably when heavily fouled or with little lubrication.

Spike's Tactical designs and manufactures AR-15 components to standards meant for range use, competition, and duty. This is the same BCG Spike's uses in their own complete rifles.