SIONICS Weapon Systems AR-15 Complete Bolt Carrier Group (HP/MPI) - Auto - Phosphate

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SIONICS Weapon Systems AR-15 Complete Bolt Carrier Group (HP/MPI) - Auto - Phosphate

The SIONICS Bolt Carrier Group - Auto Version - for your AR15, M16 or M4. Parkerized Exterior and Chrome Lined inside the Carrier. Machined to USGI specifications. This M16/M4 Carrier includes the proper Mil-Spec Gas Key. The Gas Key is Chrome Lined and Heat Treated per USGI specifications.

The Gas Key is secured to the Carrier with Ned Christiansen's Optimized Carrier Key Screws (OCKS) staked per Military-Specifications and properly staked using a MOMOAKS. The OCKS offers a much more secure staking thanks to the cranulated screw heads. These properly hardened parts insure a strong staking and proper Gas System functioning. Furthermore, each carrier has a gasket formed by aviation Permatex that is applied by hand to the mating surfaces between the gas key and the carrier.
The Bolt Assembly is machined from Mil-Spec Carpenter No. 158 Steel, Shot Peened for increased strength and includes Tool Steel machined Extractor and Ejector, HD Sprinco Extractor Spring and is High Pressure Tested and Magnetic Particle Inspected.

Prior to shipping, all SIONICS Bolt Carrier Groups are Test Fired for function. Because of the Test Firing Procedure, the Bolt Carrier Group will show handling marks consistent with these Quality Control Procedures.

  • Milspec Carpenter No. 158 Steel
  • HPT Bolt - High Pressure Tested / Proof
  • MPI Bolt - Magnetic Particle Inspected
  • Shot Peened Bolt
  • Chrome Lined Carrier - Auto
  • Chrome Lined Gas Key
  • Gas Key Hardened to USGI Specifications
  • Enhanced OCKS Carrier Key Screws
  • Key Staked Per Mil-Spec
  • Tool Steel Extractor
  • Sprinco Heavy Duty Extractor Spring
  • Black Extractor Insert
  • Machined to USGI Specifications
More Information
Dangerous GoodsYes
Shipping RestrictionITAR/Export Restricted
Bolt Carrier CutFull Auto (FA)
FinishManganese Phosphate Parkerization
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