My Left Hand T-3 Tikka in 223 . I ditched the factory supplied rings, and used Steel Burris Picatinny Bases, and Steel Weaver QD Rings, replace the Bolt Handle with Machined Tactical , and replaced the Bolt Cover on the back of the Bolt with Metal. I also changed out the recoil lug from Aluminium to Steel. Scope is a Vortex Viper 3x9 with Bullet Drop Ret.