Aero Precision AR-9 9mm Bolt Carrier Group

The Aero Precision® AR-9 9mm Bolt Carrier Group (BCG) features a carrier machined from 8620 tool steel and a 4140 steel extractor for superior strength and long-lasting durability. What’s more, a corrosion-resistant black nitride finish also acts as a friction coating and reduces the need for lubricants and cleaning. Plus, this BCG features 4140 steel bolt guides and a grade 23 titanium firing pin as well as a firing pin retaining pin. To top it all off, this BCG has a heavy-duty extractor coil pin to ensure your AR-9 cycles smoothly. Order today! Made in USA.