I purchased a CMPicon barreled receiver that did not have a rear site base installed.

I ordered a replacement base and was wondering what the best way to attach it to the receiver is?

I have seen photos of a set screw but wondered if there is a non drill method that will hold it into place.

If the drilling is the preferred method what size of screw threads do you use and where do you locate it? (forward of the dovetail?)

I previously posted on the CMP forum but trying to get input from others.

Thanks for your comments,
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