Cart 0

Obsidian Match .458 Socom Black Nitride BCG | Melonite Bolt Carrier Group


Vendor: CTS

  • $10789
  • Save $159

We are proud to announce the release of our QPQ Black Nitride .458 Socom Bolt Carrier Groups. our BCG Features Match Grade Melonite/Nitride Treated BCG and is machined and finished to a higher standard to meet and exceed all Mil Spec. It is machined using the most precise equipment from the leading top tier OEM Manufacturer. The bolt is MPI/HP tested & Marked to give you ultimate confidence in your competition rifle system. MPI (Magnetic Particle Inspected) Bolt, HP (High Pressure Tested). Obsidian Match Nitride Bolt Carrier Group. 

Lifetime Warranty & 100% Made in the U.S.A



  • Material: Domestic Aircraft Quality 8620 Steel
  • Gas Key: 4130 Billet Steel: Grade 8 Gas Key Screws (properly staked)

Bolt Specs:

  • Bolt Material: 9310 
  • Extractor Material: 4140 Steel
  • Mil-Spec O-Ring
  • Mil-Spec Gas Rings (3)
  • Cam Pin Material: 4140 Steel
  • Firing Pin Material: Hard Chrome/Ground 8740
  • Other: MPI Tested, Shot Peened
  • QPQ Black Nitride Treated


  • MPI Bolt with inside and out Black Nitride Treatment
  • Billet Machined Extractor with O-ring Insert
  • Military Specification Gas Key Staking
  • Gas Key Hardened to USGI Specifications
  • Made in the USA
  • Weighs 9.8 oz

We Also Recommend