The adapter looks like this when it in the bolt and ready to be put back in the action. The breach plug is just a straight swap but you will need a deep well socket or a modified BP tool.


Rem 541 2 piece bases from Weaver and Warne fit Knight round tops.

Warnes offers some nice ones that look like SS too. They accept nearly all rings including mil-spec M4 spacing IIRC.
http://www.midwayusa.com/viewProduct...tNumber=179769