The Guntec USA AR9 Bolt Carrier Group (brand part no. GT-BCG-9) is a 9mm, mil-spec-pattern carrier finished in a QPQ salt bath nitride coating, built to run in both Glock- and Colt-style AR9 lower receivers. The carrier is machined from 8620 steel and paired with a 9310 steel bolt, both fully heat treated for durability, and an external extractor design keeps extraction reliable across a wide range of 9mm ammunition. It’s dust-cover compatible, so it drops into a standard AR9 upper without giving up that added protection from debris. Made in the USA, it’s a dependable choice for building or refreshing a 9mm AR pistol carbine.

Key Specifications

• Chambered for 9mm, built to a mil-spec AR9 carrier design.
• Compatible with both Glock- and Colt-style AR9 lower receivers.
• Carrier body is machined from 8620 steel.
• Bolt is machined from 9310 steel, a different, higher-strength alloy than the carrier.
• Uses an external extractor design for reliable case extraction.
• Dust cover compatible for a standard AR9 upper.
• Fully heat treated for durability under sustained use.
• Finished with a QPQ salt bath nitride coating for corrosion resistance and lubricity.
• Made in the USA.
• Measures approximately 9.85 inches overall.

Frequently Asked Questions

Will this fit my Colt-style AR9 lower? Yes, it’s compatible with both Glock- and Colt-style AR9 lower receivers.

What’s the carrier and bolt made of? An 8620 steel carrier paired with a 9310 steel bolt, both fully heat treated.

Is it made in the USA? Yes.

Buy the Guntec USA AR9 Bolt Carrier Group

A dual-pattern-compatible 9mm carrier is a dependable way to refresh or build out an AR9 upper. Order it from Guntec USA through our Lubbock, Texas gun shop for fast, direct shipping, and browse more gun parts kits to complete your build.