Don't own an RAR, yet. Heard they are very accurate. Was looking at an exploded view of an RAR and it looks like vertical slots in the lower side of the receiver. Do those slide into a 'frame' mounted inside the stock???
I just pulled up a pic of the inside of an American Rifle stock and it looks like the front and rear screws go up into those 'V' blocks and connect the receiver, stock and block all together. Got it.