338 ARC AR-15 Barrel
Brands: Proof Research
MADE IN THE USA
about:
Designed with the goal of improving performance and reliability in the AR platform. Proof’s Caliber Matched Gas System (CAMGAS) results in a gas system tuned specifically for the cartridge and length of the barrel.
FREE SHIPPING OVER $100
FIND AN FFL DEALER
* All NFA Regulations apply.
$1,149.00
How TAG Layaway Works:
Make a 25% non-refundable deposit, with the remaining due in 60 days. No pre-payment penalties, no interest, and no additional fees.
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, the gas system pressure is the same as how the AR platforms were originally designed. 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.
* Use of full mass components throughout (full mass bolt, buffer, and springs) is recommended.
* All barrels with Intermediate, Rifle +1, Rifle +2, and Rifle +3 gas systems include the proper gas tube.
* 6 ARC Disclaimer – There is no guarantee of 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.
| 12” 338 ARC Carbon Fiber | 14.5” 338 ARC Carbon Fiber | |
| SKU | 144794 | 144817 |
| Barrel Length | 12″ | 14.5” |
| Twist Rate | 1:8 | 1:8 |
| Gas Length | Pistol | Pistol |
| Gas Journal | .750 | .750 |
| Port Size | .120 | .093 |
| Muzzle Thread | 5/8×24 | 5/8×24 |
|
Carbon Fiber |
Steel |
| 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. |
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. |
Top Products
EMBRACE YOUR
WILD SIDE
