Defiance quality and dependability - Now with Guaranteed +/- .001"""" Headspace. Innovation and process advancement have led to the birth of the Ruckus bolt action. Sharing many of the same features of the Deviant, such as integral scope bases and recoil lug, but with a new bolt design that affords ever-tighter tolerances and a lower price tag. Created with the discerning competitor in mind, the Ruckus Tactical has Integral 1913 Mil spec (picatinny) scope base and recoil lug . Defiance Action's most rigid receiver, a real workhorse. For Remington 700 Short Actions Right Hand .408 Ruckus Tactical Action has Guardian AI/AW Mag Cut (De Mfg: Defiance Machine