Toolcraft 458 SOCOM Bolt Carrier Group | Black Nitride

Toolcraft 458 SOCOM Bolt Carrier Group | Black Nitride

The Toolcraft 458 SOCOM Bolt Carrier Group | Black Nitride is a full-auto M16-profile BCG for AR-15 platform rifles chambered in .458 SOCOM. It uses a 9310 steel bolt and an 8620 steel carrier, giving builders a complete carrier group with the material specifications expected for a large-bore AR-15 operating system. The black nitride finish provides a smooth, corrosion-resistant surface that supports easier cleaning and reduced surface wear during normal maintenance.

This Toolcraft 458 SOCOM BCG includes a shot-peened, MPI-inspected bolt, a 4140 steel extractor, three mil-spec gas rings, and a mil-spec O-ring. These verified component details help support consistent extraction and gas system function when installed in a properly configured .458 SOCOM upper receiver. The assembly is built as a complete drop-in bolt carrier group for compatible AR-15 configurations.

The carrier features a 4130 steel gas key secured with Grade 8 fasteners and properly staked per military specifications. Additional verified components include an 8620 steel cam pin and a 416 stainless steel firing pin. Together, these parts give the Toolcraft 458 SOCOM Bolt Carrier Group a practical, serviceable configuration for builders who want a complete black nitride BCG rather than sourcing individual carrier group components separately.

Arm or Ally offers Toolcraft factory-coated BCGs rather than third-party coated versions, helping preserve Toolcraft warranty coverage on both finish and function. This black nitride model is made in the USA and is backed by Toolcraft’s 100% lifetime no-questions-asked warranty when purchased through Arm or Ally.

• Complete Toolcraft 458 SOCOM bolt carrier group
• For AR-15 platform rifles chambered in .458 SOCOM
• Full-auto M16-profile carrier
• Black nitride finish
• 9310 steel bolt
• 8620 steel carrier
• 4140 steel extractor
• Shot-peened, MPI-inspected bolt
• Three mil-spec gas rings and mil-spec O-ring
• 4130 steel gas key with Grade 8 fasteners
• Gas key properly staked per military specifications
• 8620 steel cam pin
• 416 stainless steel firing pin
• Made in the USA
• Toolcraft lifetime warranty when purchased through Arm or Ally