The ALL-NEW Tactical Edge Arms® (MPI) complete bolt carrier group is fully assembled and made in the U.S.A.. Bolt carrier group (auto version) for your AR15, M16, or M4. Nitride exterior and inside carrier. Machined to USGI specifications. This M16/M4 carrier includes the proper Mil-Spec gas key. Gas key is Nitride coated and heat treated per GI specifications. Gas key is secured to carrier via USGI domestic mfg Grade 8 fasteners and properly staked per Mil-Specs. These properly hardened parts insure a strong staking and proper gas system functioning.
The bolt assembly is machined to the correct 9310 steel, Nitride coated and shot peened for increased strength (Nitride coating is 15% stronger than Nickel Boron, run it dry and its scratch resistant), includes tool steel machined extractor and ejector, Mil-Spec Extractor Spring, and is HPT (High Pressure Tested) and MPI (Magnetic Particle Inspected). Prior to shipping, all T.E.A Bolt Carrier Groups are test fired for function. As such, the Bolt Carrier Group will show handling marks consistent with these quality control procedures.
Written by 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.
- 9310 steel
- HPT Bolt (High Pressure Tested/ Proof)
- MPI Bolt (Magnetic Particle Inspected)
- Shot Peened Bolt
- Nitrided coated bolt
- Nitrided coated Carrier (AUTO)
- Nitrided coated Gas Key
- Gas Key Hardened to USGI Specifications
- Grade 8 Hardened Fasteners , Key Staked Per Mil-Spec
- Tool Steel Extractor
- Mil-Spec Extractor Spring
- Black Extractor Insert
- Mil-Spec Crane O-Ring