Proof Research 134504 Bolt Action Barrel Pre-Fit 6.5 Creedmoor 16 1:8 Twist (5 Groove), 5/8-24 tpi Threaded, Carbon Fiber, Drop-In Design for Sig Cross, Rifle Barrel

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!