SV Precision Bronze is a Physical Vapor Deposition (PVD) bolt carrier group coating having all of the same desirable properties as SV Precision Gold but with better wear and lubricity characteristics. In fact SV Precision Bronze has the highest lubricity of all the ceramic based coatings – making it an excellent choice as a dry film lubricant where improved wear resistance and reduced friction are desired. As with all the SV Precision bolt carrier group coatings; peak cyclic rate and consistency due to increased lubricity and smoother action under high-load conditions can be realized. It’s all about the creation of a smoother stable platform.


  • Coefficient of Friction: 0.2
  • Hardness: 3200 Vickers
  • Max Temperature: 750° F
  • Thickness: 2-3 microns
  • Color: High Luster Rose Bronze


  • Lubricity
  • Wear Resistant
  • Smoother Recoil
  • Improved Consistency
  • Faster Cyclic Rate
  • Easier Cleaning
  • Reduced Carbon Fouling

Additional information

Weight 1.1 lbs

SV Precision Steel Bronze 308WIN/7.62x51mm/6.5 Creedmoor BCG


SV Precision coated bolt carrier group (full auto version) for AR10 (.308 WIN / 7.62x51mm / 6.5 Creedmoor) machined from Mil-Spec 8620 aircraft quality steel with shrouded firing pin and Mil-Spec chrome lined interior. SV Precision BCG includes the proper chrome lined and heat treated gas key. Gas key is secured to carrier with Grade 8 fasteners and properly staked per Mil-Specs. This insures a strong staking and proper gas system functioning. The bolt assembly is CNC machined from Mil-Spec Carpenter No. 158® steel and shot peened for increased strength per Mil-Spec; includes tool steel extractor with spring; firing pin chromed finished with firing pin retaining pin and cam pin.

HPT (High Pressure Batch Tested) and MPI (Magnetic Particle Inspected).

Complete Mil-Spec AR10 Bolt Carrier with Bolt Assembly HPT/MPI Tested:

  • Compatible w/ any DPMS LR308 platforms
  • Mil-Spec BCG Machined from 8620 Aircraft Quality Steel and heat treated to 60-61 RC
  • Mil-Spec Chrome Lined Carrier Interior
  • Mil- Spec Chrome Lined Gas Key
  • Key Staked with Grade 8 Screws, per Mil-Spec
  • Mil-Spec Carpenter 158® Bolt w/ Spring and Ejector
  • Tool Steel Extractor w/ Spring
  • Mil-Spec Firing Pin w/ Chrome Finish
  • Mil-Spec Cam Pin
  • Full Auto Carrier (Backward compatible with all semi-auto rifles)
  • BCG Weight – 17.8 oz.
SKU: SVP-BRN-308-BCG Categories: , ,