DPMS DP51655109766 5.56/300 Blackout Bolt Carrier Group
Mil-spec Carpenter 158 steel bolt with shot peening and magnetic particle inspection. Chrome-lined phosphate-coated carrier with grade 8 staked gas key. Reliable performance for 5.56 and 300 Blackout platforms.
DPMS Mil-Spec Bolt Carrier Group
This is a no-nonsense bolt carrier group built to military specifications for shooters who demand reliability. The design accommodates both 5.56 NATO and 300 Blackout cartridges, making it a versatile choice for modern rifle platforms.
Construction & Materials
Bolt
- Manufactured from Mil-spec Carpenter 158 steel
- Shot peened for enhanced durability and fatigue resistance
- High pressure tested to ensure safe operation
- Magnetic particle inspected for internal defects
Gas Key & Carrier
- Gas key machined from bar stock for precision fit
- Chrome lined and phosphate coated for corrosion resistance
- Secured with grade 8 fasteners and staked per military specifications
- Bolt carrier features phosphate exterior with chrome-lined interior
What to Expect
This BCG ships dry and will have a grey, dusty appearance. This is normal and expected. The finish will darken to black once you apply your preferred lubricant—CLP, Breakfree, or similar products work well. This dry-pack method ensures the component arrives in pristine condition without excess oil or grease.
Performance
Built to withstand the demands of serious shooting, this carrier group delivers the reliability you need whether you're running suppressed 300 Blackout or standard 5.56 NATO ammunition.
