It is the part easiest to remove from a rifle since it is supposed to be removeable from factory, therefore if mismatching most commonly it includes...
Dave is fully correct in here, as well as Mike. My (additionally) SSZZA4 stamped SS DC sniper (bnz 43 action with a single rune on the mag guard; if...
Easy to spot, the Argentine LT front base has the two cuts for the screws done in a way that it has small half moon holes to the center of the base....