Originally Posted by LSU_Lou
Thanks rifleshooter. And yes I do have the original cover.
Do some comparing and measuring it is the front small lip of the cover that must go into the rounded groove in the rifle.
My small square at rear for spring lock had to be filed a little as it was some what smaller then the original covers opening so the lock did not snap into it easy you want it as tight as it can be.
I found the weaver rail did not allow my EOTect to fit as tight as I wished, a layer of plastic from sandwich bag between the rail and the EOTect made it tight.
The cover may not seem rock solid after being installed and rear screws tightened, but it holds the sight zero pretty good.
These cover installed rails are not the really best way to install a optic but they do a fairly good cheap way of doing the job.