Aero Precision APRH308186 .308 Bolt Carrier Group

Aero Precision .308 Bolt Carrier Group

This is the firing mechanism your big-bore AR10 build deserves. Aero Precision has engineered a bolt carrier group that combines precision manufacturing with proven reliability, delivering the performance serious shooters demand.

Carrier Specifications

Material & Construction:

• Machined from 8620 tool steel for durability and longevity
• Black nitride finish provides advanced corrosion resistance and reduced friction
• Minimizes the need for frequent lubrication and cleaning
• Forward assist serrations for positive control

Gas Key:

• 4130 steel construction
• Attached with Grade 8 hardware
• Properly staked to military specifications

Bolt Features

Material & Finish:

• Case-hardened 9310 steel bolt for superior strength
• All components shot peened and black nitride coated
• External surfaces CNC ground after heat treat for precision fit
• Firing pin hole diameter reduced to .070" for enhanced reliability

Extractor System:

• Machined from 4340 steel
• Double o-rings and double springs for consistent extraction
• Designed for reliability across thousands of rounds

Firing Pin:

• 8740 steel construction
• Hard chrome coated for extended service life

Quality Assurance

Every bolt carrier group is Magnetic Particle Inspected (MPI) and High Pressure Tested (HPT) to ensure it meets or exceeds military standards. This is a high-pressure bolt designed for demanding applications.

Multi-Caliber Compatibility

The multi-caliber bolt design functions reliably with .308 Winchester, 7.62x51 NATO, .338 Federal, and other .308-based cartridges. One carrier group works across your .308 platform rifles.

What's Included

• Complete bolt carrier
• Finished bolt assembly
• Firing pin
• Cam pin
• Retaining pin
• Laser-engraved Aero Precision 'A' logo

Fits standard AR .308 compatible uppers and rifles. Built to last, tested to perform.