Proof Research 134542 Bolt Action Barrel Pre-Fit 6mm Creedmoor 16" 1:7.50" Twist (4 Groove), 5/8"-24 tpi Threaded, Carbon Fiber, Drop-In Design for Sig Cross

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!