Dr Heckel· Registered
I'll second that recommendation. I just installed one after taking off a scope with two separate mounts and was surprised how much better the one piece grabs on to that dovetail. I couldn't get it to budge after just finger tightening it down. Good mount, good price...Get a one piece like this.
There a couple others similar but the one piece really locks on the dove tail and stops it fron sliding due to the bolt recoil.