Aero Precision AR9 9mm Blowback Bolt Carrier Group

Aero Precision AR9 Blowback Bolt Carrier Group

The Aero Precision EPC/AR9 Bolt Carrier Group is engineered as the foundation of a reliable 9mm blowback AR platform build. This is a complete, fully assembled unit ready for installation.

Materials and Construction

Bolt Assembly: Machined from 8620 steel and finished with a durable black nitride coating that resists corrosion and wear.

Firing Pin: Grade 23 titanium construction provides exceptional fracture resistance and longevity under repeated firing cycles.

Extractor: 4140 steel extractor paired with a heavy-duty coil spring pin ensures reliable case extraction across varying ammunition types.

Bolt Guides: 4140 steel construction maintains precise alignment within the carrier.

Performance Characteristics

This bolt carrier group is specifically designed for the extreme demands of direct blowback 9mm operation. The precision machining and material selection work together to handle the higher pressures and cycling speeds inherent to blowback systems.

What's Included

The bolt carrier group arrives fully assembled with all components installed:

• 8620 steel bolt assembly
• 4140 steel bolt guides
• Grade 23 titanium firing pin
• Firing pin retaining pin
• 4140 steel extractor
• Heavy-duty extractor coil pin

Simply drop it into your AR9 upper receiver and you're ready to go.