Proof Research 138946 Bolt Action Barrel Pre-Fit 260 Rem 18" 1:8" Twist (5 Groove), 5/8"-24 tpi Threaded, Carbon Fiber, Drop-In Design for Sig Cross Gun Sights The Native5 features a spear

The Native5 features a spear point blade made from CPM SPY27 stainless steel

The XS Tritium stripe front sight for the AR features precision machined stress proof steel

For extra security the TSA powerclaw latches keep your equipment safely locked during transit but accessible for inspection by the TSA when required

Integrated Bluetooth connectivity pairs effortlessly with the Steiner Connect App 2

Proof Research 138946 Bolt Action Barrel Pre-Fit 260 Rem 18" 1:8" Twist (5 Groove), 5/8"-24 tpi Threaded, Carbon Fiber, Drop-In Design for Sig Cross Gun Sights The Native5 features a spearThe 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!