Quality AR 15 uppers, AR15 parts, AR-15 rifle manufacturer. Friday Harbor, WA
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Nickle Boron Bolt Carrier Group M16/AR15
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Original Price $165
Your Price $139.99
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Nickel Boron, mil-spec assembly with bolt, bolt carrier, and firing pin. Ready to drop into the rifle or carbine upper of your choice. Features a Nickle Boron self lubricating finish for increased wear resistance, surface strength and durability, and an extractor booster to ensure reliable cycling during rapid semi-auto or full-auto fire (tested full-auto 2/10/13).

Bolt: 9310 case hardened steel, shot-peened, individually MPI tested, nickel boron coated
Carrier: 8620 steel, heat-treated, fully-shrouded firing pin, nickel boron, full-auto rated

Each assembly is magnetic particle inspection tested to ensure its free from imperfections that can lead to premature failures. Properly staked gas key prevents gas leakage that can lead to short stroking. Available in .223/5.56mm, .300 Blackout ONLY... Staked screws, nickel boron exterior with chrome interior for bolt and cam pin.
515 Tucker Ave, Friday Harbor, WA 98250 | sales@hardenedarms.com
Phone: 425-530-0837