Originally Posted by stalkingbear
It's doable but I'm wondering why you want to do it in the 1st place? No more than they cost why not just buy a 7600 and then you'll have both?
For the simple reason if you know anything about the 742 the receiver wears out because the bolt slams against the rails at the end of the stroke with the gas operation of the semi auto and makes marks in the rail that looks like a serrated edge. This in time hangs up the bolt and you wind up with a single shot if it gets too bad the bolt jams and you got to use tools to un jam it and the receiver is shot.
This way by blocking the gas port and making a what most folks would call a spring operated straight pull action the receiver does not get any more damage and it is still usable. Just like the 760 does not wear out the receiver because operating it by hand does not harm the receiver this will do the same. All I am trying to do is save the receiver from any more damage. Remington says these guns were good for A 1000 Rounds which is very optimistic. My gunsmith says the number is more like 500 rounds which I think is more realistic as the guy who I got this gun from said the most he figures was shot through it was 200 rounds and it is half worn out already.