AR-15 Barrels | 223 Wylde | Carbon Fiber

PROOF designed their AR barrels with the goal of improving performance and reliability in the AR platform. The Caliber Matched Gas System (CAMGAS) results in a gas system that is tuned specifically for the cartridge and length of the barrel. The AR-15 Platform was originally designed around the 223REM and 5.56NATO cartridges and the AR-10 was designed around the 308 Win/7.62NATO round. With higher performance cartridge such as the 6.5 Creedmoor; 6 ARC; and 22 ARC; the bore pressure remains higher further down the barrel.

By moving the port location; we ensure that the gas system pressure is the same as what the AR platforms were originally designed around. The result is a recoil impulse that is noticeably softer; less fouling in the receiver; increased reliability of extraction; and less wear and tear on brass. This helps keep you on target and shooting while taking advantage of the latest high performance cartridges.

* Barrels are guaranteed for headspacing to the specifications of the JP Enterprise Enhanced Bolt.

* It is recommended to double check and ensure proper headspace before firing your rifle.

* We recommend the use of full mass components throughout (full mass bolt; buffer; and springs).

* All barrels with Intermediate; Rifle +1; Rifle +2; and Rifle +3 gas systems include the proper gas tube.

* 6 ARC Disclaimer – We do not guarantee optimal cycling performance with factory ammunition weighing under 100 grains.

* 6.5 Grendel; 22 ARC; and 6 ARC barrels are designed for operation using a Grendel Type II bolt.