AR-15 .450 Bushmaster / .458 SOCOM Bolt Carrier Group | Phosphate Finish | Custom Laser Engraving

Purpose-Built for Large-Caliber AR Platforms

This AR-15 Bolt Carrier Group is engineered specifically for use in AR-platform rifles chambered in .450 Bushmaster and .458 SOCOM. These cartridges generate higher bolt forces than standard 5.56 platforms, making a properly built and reliable bolt carrier group essential for consistent operation.

Durable Phosphate Finish

The phosphate finish provides proven corrosion resistance while promoting proper lubrication retention. This military-style coating helps ensure smooth cycling and long service life, even under demanding conditions and higher-pressure large-caliber applications.

Fully Assembled, Drop-In Ready

This bolt carrier group comes fully assembled and ready for installation, making it an ideal choice for new builds or replacements. Precision-machined components ensure proper fit and reliable function within standard AR-15 upper receivers designed for large-caliber cartridges.

Optional Custom Laser Engraving

Personalize your bolt carrier group with optional custom laser engraving. Choose text, symbols, or select designs to make your rifle unique without impacting fit, function, or reliability.

Compatibility

• Designed for AR-15 platforms chambered in .450 Bushmaster and .458 SOCOM
• Compatible with standard AR-15 upper receivers built for large-caliber use
• Fully assembled and drop-in ready

Why Choose This Bolt Carrier Group

• Built specifically for large-caliber AR applications
• Durable phosphate finish for reliable operation
• Fully assembled for easy installation
• Optional laser engraving for personalization
• Ideal for custom big-bore AR builds and upgrades