22 ARC AR-15 Barrel

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.

By moving the port location, PROOF ensures 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.

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

Carbon Fiber Features:

Lightweight: Up to 64% lighter than traditional steel barrels of similar contour.
Extreme Temperature Resistance: Improved heat dissipation for cooler and longer lasting barrels.
Unprecedented durability: Wrapped with high-strength, aerospace-grade carbon fiber impregnated with a proprietary matrix resin.

Traditional Steel:

Long-Lasting: Excellent erosion wear characteristics and corrosion resistance.
Extreme Pressure Resistance: An optimum combination of high tensile strength along with requisite toughness to withstand extreme chamber pressures encountered during firing.

18″ CF 22 ARC:

Length:18″
Twist: 1:7
Gas Length: Rifle+1
Gas Journal: .750
Port Size: .099
Muzzle Thread: 5/8-24
Weight: 1lbs-15oz

18″ SS 22 ARC:

Length:18″
Twist: 1:7
Gas Length: Rifle+1
Gas Journal: .750
Port Size: .099
Muzzle Thread: 5/8-24
Weight: 2lbs-14oz