Proof Research 22 WMR Zermatt Arms Pre-Fit Steel Barrel

Proof Research 22 WMR Zermatt Arms Pre-Fit Steel Barrel are designed for several Zermatt Arms action models. The barrel makes it easy to upgrade your rifle or change calibers. Proof’s pre-fit Zermatt Arms shouldered barrels are easy to install. Simply thread it on, torque it down, double check headspace and head for the range.

Proof Research make their steel barrels in house with the exact same vow to quality and consistency as they put into the carbon fiber barrels. The drilling, rifling, and lapping process is identical to their composite barrels. They start with the same steel used in the carbon fiber barrels. It is a double stress relieved 416R stainless steel, a pre hardened chromium stainless steel that was specifically made by engineers in collaboration with rifle barrel makers to give the consistent, high quality and durability this industry demands.

* Barrels are specific to the action type/length and are not interchangeable.

Proof Research 22 WMR Zermatt Arms Pre-Fit Steel Barrel Features


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.


Part Number Action Length Twist Rate Muzzle Thread Contour Weight
133590 RimX 20” 16 ½-28 Competition 5lbs-15oz


More Rifle Parts

Additional information

Weight N/A
Barrel Length

20" 133590


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