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Proof Research AR – 15 11.5” Stainless Steel 223 Wylde Barrel,1 7 Twist,Carbine – Length – 5/8×24 TPI

Original price was: $649.00.Current price is: $129.80.

Description

We have designed our AR barrels with the goal of improving performance and reliability in the AR platform. Our Caliber Matched Gas System (CAMGAS) results in a gas system that is tuned specifically for the cartridge and length of the barrel.
We make our steel barrels in-house with the exact same commitment to quality and repeatability as employ on our carbon fiber barrels. The drilling, rifling, and lapping process is identical to our composite barrels. We start with the same steel as we use in the carbon fiber barrels. It is a double stress-relieved 416R stainless steel, a pre-hardened chromium stainless steel that was specifically designed by engineers in collaboration with rifle barrel makers to provide the consistent, high quality and durability the firearms industry demands.
Features

Excellent machinability for gun drilling and reaming, plus exceptional polishability for uniform lapping

A homogeneous microstructure which responds to heat treatment providing a uniform hardness along the length of the barrel

An optimum combination of high tensile strength along with requisite toughness to withstand extreme chamber pressures encountered during firing

Excellent erosion wear characteristics and corrosion resistance


Specifications:

Barrel Material: 416-R

Rifling Type: 4 Groove

Barrel Caliber: 223 Wylde

Barrel Twist: 1:7

Barrel Length: 11.5″

Barrel Gas System: Carbine

Muzzle Thread: 5/8×24 TPI

Gas Block Diameter: .750″

Barrel Weight: 1 lb – 8 oz

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