- Milspec Carpenter No. 158® Steel
- HPT Bolt - High Pressure Tested
- MPI Bolt - Magnetic Particle Inspected
- Shot Peened Bolt
- Chrome Lined Carrier - Auto
- Chrome Lined Gas Key
- Gas Key Hardened to USGI Specifications
- US Made Optimized Carrier Key Screws
- Key Sealed, Torqued, and Staked Per Mil-Spec
- Tool Steel Extractor
- Sprinco Heavy Duty Extractor Spring
- Black Extractor Insert
- Machined to USGI Specifications
These Bolt Carrier Groups are built for us to better than spec! Carrier is 8620 steel, full-auto contour, parkerized exterior and chrome lined inside. Machined to USGI specifications. Carrier includes the proper gas key, which is chrome lined and heat treated per USGI specifications. The gas key is properly sealed, secured to the carrier with domestically manufactured Optimized Carrier Key Screws (OCKS), and properly staked per military specifications. The OCKS ensure a strong staking and proper gas system functioning. The bolt assembly is machined from mil-spec Carpenter No. 158® Steel (not cheaper 9310), shot peened for increased strength, high pressure tested and magnetic particle inspected. Includes tool steel machined extractor and ejector and heavy duty Sprinco extractor spring.
Each of these BCGs has been test fired as a unit for function. Because of the test firing procedure, the BCG will show handling marks consistent with these quality control procedures.
We think that these BCGs are some of the best you can buy, and the price is better than the big names. Once you run them, we're convinced you'll agree!
Per Bureau of Alcohol, Tobacco, Firearms and Explosives (BATFE), Chief of the Firearms Technology Branch -
"M16 Bolt Carriers are not designed and intended solely and exclusively for use in converting a weapon into a machinegun and are not any combination of parts from which a machinegun can be assembled. Further, an M16 Bolt Carrier is not a firearm as defined in the GCA or a machinegun as defined in the NFA. An M16 Bolt Carrier is simply a Machinegun part and as such its domestic sale and possession is unregulated under the Federal firearms laws. It is not unlawful to utilize a M16 Machinegun bolt carrier in a semiautomatic AR15 type Rifle."