Fans of the new Zermatt Arms RimX rimfire actions will be an even bigger fan of the PROOF Research prefit carbon fiber barrels designed for the RimX action. PROOF's RimX prefit barrels will arrive threaded and chambered. This is a shouldered barrel that requires few specialized tools for install. They're offered with a variety of lengths and contours in both stainless steel and carbon fiber.
* These PROOF Research/Zermatt Arms RimX prefit barrels are pre-headspaced.
2 Reviews
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Awesome as always
Super easy purchase from Altus, great shooting barrel from Proof. Nothing but compliments all around!
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Proof Rim-X 26" SS Barrel
The barrel fir perfectly and installed with no issues as usual. Still breaking it in and finding the best ammo but so far, sub ½” groups at 50 yards are the norm. I would recommend the barrel to anyone shooting 22 BR or 22 PRS competitions although it is a bit heavy to lug around.
