The times of sending off your Sig Cross to have the barrel changed is over with Proof’s drop-in barrel Design! Stand-alone and guaranteed to headspace is achievable at your own home with no gunsmith required!
Proof Research 134542 Bolt Action Barrel Pre-Fit 6mm Creedmoor 18″ 1:7.50″ Twist (5 Groove), 5/8″-24 tpi Threaded, Carbon Fiber, Drop-In Design for Sig Cross
