The KAK Industries AR-15 5.56/.300 Blackout Bolt Carrier Group is built for reliability and performance in demanding conditions. Featuring an M16 auto-profile carrier machined from high-quality 8620 steel, it’s finished with a chrome-lined interior and phosphate coating for excellent wear and corrosion resistance. The bolt is crafted from a single piece of 9310 steel, heat treated, precision ground, shot peened, and MPI tested to ensure dependable performance under pressure.
A chrome-plated 8740 steel firing pin delivers consistent ignition, while the phosphate-coated, one-piece billet extractor enhances reliable case extraction. The gas key, made from durable 4130 steel, is chrome lined and phosphate coated, then precision staked using Grade 8 T25 screws for long-term durability. Designed for AR-15 and M16 platforms, this OEM bolt carrier group is a solid choice for gunsmiths and shooters who demand dependable function, rugged materials, and long-lasting performance.
Carrier Profile: M16 Auto Profile
Carrier Material: 8620 Steel (Aircraft/Bearing Quality)
Carrier Finish: Chrome Lined, Phosphate Coated
Bolt Material: 9310 Steel (Aircraft/Bearing Quality), Single-Piece
Bolt Treatment: Heat Treated, Precision Ground, Shot Peened, MPI Tested
Bolt Finish: Phosphate
Firing Pin Material: 8740 Steel
Firing Pin Finish: Chrome Plated
Extractor Type: One-Piece Billet, Fully Machined
Extractor Finish: Phosphate Coated
Cam Pin Finish: Phosphate
Ejector/Extractor Retaining Pin Material: S7 Tool Steel
Gas Key Material: 4130 Steel
Gas Key Finish: Chrome Lined, Phosphate Coated
Gas Key Attachment: Precision Staked with Grade 8 T25 Screws (KAK), Hydraulic Staking
Platform Compatibility: AR-15 / M16
Corrosion Resistance: High — Phosphate coating with chrome lining offers excellent wear and corrosion resistance
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