Product Overview
SCORPION RIFLE WORKS NITRIDE HPT/MPI BOLT CARRIER GROUP
The ALL-NEW (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 Bolt Carrier Groups are test fired for function.
Features
- 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
- MADE IN AMERICA
