Proof Research Barrel for Defiance Ruckus Features The Proof Research pre-fit barrel is machined from double stress relieved 416R stainless steel a material chosen for its extreme pressure resistance and long service life under repeated high round count use. The competition contour balances rigidity with manageable weight helping the barrel resist the heat induced stringing that can degrade accuracy during extended strings of fire. Chambering and threading are completed at the factory so installation is a simple torque on operation followed by a headspace check with the proper gauges before heading to the range. This pre-fit design is engineered specifically to deliver unprecedented accuracy and performance once installed correctly on a compatible action. This barrel is designed exclusively to fit Defiance Ruckus Tenacity and Anti actions equipped with the recessed bolt nose option and it will not fit actions using cone flat or control round feed bolts so shooters must confirm bolt nose compatibility before ordering. The 5/8x24 threaded muzzle accepts a wide range of aftermarket muzzle brakes and suppressors giving the shooter flexibility to configure their rifle for hunting or long range competition. At roughly 7.5 pounds the barrel adds meaningful mass forward for stability without becoming unwieldy in a precision rifle build. For Defiance action owners chasing tighter groups and better long range consistency this Proof Research barrel offers a proven upgrade path with minimal gunsmithing required. Proof Research Barrel for Defiance Ruckus Specifications Manufacturer: Proof Research Compatible Hosts: Defiance Ruckus Tenacity Anti Caliber: 6.5 Creedmoor Barrel Length: 26 Barrel Contour: Competition Twist Rate: 1:8 Material: 416R Stainless Steel Muzzle Thread: 5/8x24 Color: Stainless Weight: 7 lbs 5 oz Available At: GrabAGun