4-70 that's the idea, the only difference is rings go around the scope and are permanately soldered? in place, only one turret and a locking pin to hold the knob in position after adjustment. I have seen a few of these rifles and in almost every instance someone has played with the mounts, in most cases mounted ( e.g. Weavers) on top of dove tails. The other "little" alteration you run across is the removal of the rear set trigger - what a shame. --- John 303.