Zermatt Arms
PROOF Research makes carbon fiber prefit barrels for Zermatt Arms Origin, TL3, and SR3 actions, so you thread the barrel on, torque it down, and double check headspace. PROOF's carbon fiber Zermatt prefits use a Sendero contour and a 5/8-24 muzzle thread in lengths from 16.5 to 24 inches, and each barrel is specific to its action type and length. Pair one with a Zermatt Origin action, or browse all carbon fiber drop-in barrels for other platforms.