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Yep, it'll still fit but if you drop it on the butt plate, the top strap part will just hook the wood out and you've got yourself a split butt that you'll have to repair. You might get away with...

I couldn't find a change point for it when I was looking but it was certainly approved............ The (very slight) modification to the butt to accept the flat butt plate was in the EMER. ...