Description
KAK AR-15 bolt carrier group is the chrome-lined phosphate, KAK-marked model with a Carpenter 158 (C158) bolt. It works for both 5.56 NATO and .300 Blackout, which use the same BCG.
The M16 auto-profile carrier is machined from aircraft/bearing-quality 8620 steel, heat treated, ground, and chrome-lined phosphate. The bolt is machined from a single piece of Carpenter 158 steel, heat treated, precision ground, shot peened, and MPI inspected, with a phosphate finish.
The firing pin is machined to the mil-spec print from 8740, precision ground, and chrome plated. The extractor is a one-piece billet fully machined enhanced extractor with a phosphate coating. The cam pin is phosphate. The ejector and extractor retaining pin are S7 tool steel. The 4130 gas key is chrome-lined phosphate, precision staked on a hydraulic staking machine, and installed with Permatex gasket sealant. Carrier key screws are KAK T25 drive, Grade 8, and heat treated.
Key specs
- Brand: KAK Industry
- Type: M16-profile AR-15 BCG, KAK marked
- Caliber: 5.56 NATO and .300 Blackout (same BCG)
- Carrier: 8620 steel, M16 auto profile, chrome-lined phosphate
- Bolt: Carpenter 158 (C158), single piece, heat treated, precision ground, shot peened, MPI, phosphate
- Firing pin: 8740, mil-spec print, precision ground, chrome plated
- Extractor: one-piece billet fully machined enhanced extractor, phosphate
- Cam pin: phosphate
- Ejector and extractor retaining pin: S7 tool steel
- Gas key: 4130, chrome-lined phosphate, hydraulically staked, Permatex gasket sealant
- Carrier key screws: KAK T25 drive, Grade 8, heat treated
- Manufacturer part number: MO-425-3312-003
- Made in the USA
Made in the USA by KAK Industry.