16" AR9 9mm Barrel AR9 9mm-Barrel AR9-Barrel (3)

The AR-9 Barrel is a 16" is a steel barrel made out of 416R Stainless Steel with a stainless finish, a 1:10 twist rate. The barrel is chambered in 9MM with a single feed ramp machined in the barrel extension and operates with a blowback gas system.