I have never noticed this before but on a SS CRF 70 action that I looked at today,looking at it from the bottom the lower left corner on the bolt stop side is split. It seems like it was designed that way,but I just never noticed. Unless it is cracked and then I'm screwed....hope not
Ok after searching the net for some time I found a photo that shows the split....whew I was worried there. No wonder the accuracy guys use Rem 700's...lol.