A better pic of the tang...Rear bridge is too long and the tang is not in the shape of an XP or 600 action. I don't see a cutout in the RH side of the tang for a safety, so has to be of 722/early 40X origin. Need to take it out of the stock and see if it's a true single shot (if you can't tell otherwise) -- that would rule out a 722 sporter action.

The bottom of the action seems solid and part of the action...

