Black Rifle Depot

.223/5.56/300BLK M16 Profile Left-Handed Bolt Carrier Group Black Nitride

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  • .223/5.56/300BLK M16 Profile Left-Handed Bolt Carrier Group  Black Nitride
  • .223/5.56/300BLK M16 Profile Left-Handed Bolt Carrier Group  Black Nitride
  • .223/5.56/300BLK M16 Profile Left-Handed Bolt Carrier Group  Black Nitride
MSRP: $144.95
— You save $15.00


.223/5.56/300BLK M16 Profile Left-Handed Bolt Carrier Group  Black Nitride

Enhance your AR-15’s functionality with Black Rifle Depot’s Left-Handed BCG for .223/5.56/.300BLK. Precision-engineered for left-handed operators, this bolt carrier group features top-quality 9310 alloy steel in the bolt and 8620 aircraft-grade steel in the carrier, ensuring outstanding durability and performance. The black nitride finish adds a sleek look and enhances corrosion resistance and surface hardness. Fully equipped with a D2 steel extractor and MIL-SPEC components, including a staked gas key and shot-peened parts, this BCG is designed for direct impingement systems. It undergoes rigorous magnetic particle inspection, guaranteeing flawless operation. Backed by a lifetime warranty, this BCG is a reliable upgrade for shooters seeking superior quality and left-handed configuration.


  • Bolt w/ D2 Extractor
  • Bolt Carrier w/ staked Gas Key
  • Cam Pin
  • Firing Pin
  • Firing Pin Retaining Pin

Technical Specs: 

  • Gas system: Direct Impingement
  • Caliber: 5.56x45mm NATO/.223 Rem, .300 Blackout
  • Finish: Salt Black Nitride
  • Bolt: 9310 Alloy Steel (High Hardness)
  • Carrier: 8620 Aircraft Grade Steel
  • Extractor: Shot Peened and Case Hardened D2 Tool Steel
  • Firing Pin: Mil-spec 8740 steel with hard chrome finish
  • Gas Key: Mil-Spec w/ properly staked Grade-8 screws & Permatex No. 3 sealed
  • Cam Pin: 8620 Steel w/ Black Nitride Finish
  • Quality Control: MPI Inspected for QC
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Additional Information

Bolt Material:
9310 Steel
Cartridge Compatibility:
.223/5.56 NATO/.300 BLK
Salt Bath Nitride
Carrier Profile:
Left Hand
High Pressure Tested:
Magnetic Particle Inspected:
Magnetic Partical Inspected
Bolt Finish:
Nitride / Melonite
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