Quality AR 15 uppers, AR15 parts, AR-15 rifle manufacturer. Friday Harbor, WA
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5.56/300blk AR15 Bolt Carrier Group
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Original Price $129.85
Your Price $99.99
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Complete Mil-Spec assembly with bolt, bolt carrier, and firing pin. Ready to drop into the rifle or carbine upper of your choice.

AR15 Rifle 5.56 and 300 Blackout BCG. Full auto profile, chrome lined 5.5mm6/ 300blackout bolt carrier group. Will fit AR15 mil-spec upper receivers, Rifles and Pistols.

Mil-Spec MIL-STD-171 Melonited
Individually MPI Tested
Bolt: 9310-Case hardened, Shot Peened, and MPI tested.
Carrier: 8620 Tool Steel-(M16 full shroud)-Heat Treated, Case Hardened, & Melonited.
Gas Key: Melonited-Grade 8 Hardened Fasteners, Permatex No. 3 sealed, Torqued to 60 in lbs, & Mil-Spec Staked
Cam Pin: 4340 Steel-Heat Treated & Phosphated
Extractor: Tool steel S7-Heat Treated to 48-53 Rockwell C & Phosphated
AR15 5.56/300Blackout BCG Firing pin
515 Tucker Ave, Friday Harbor, WA 98250 | sales@hardenedarms.com
Phone: 425-530-0837