You don't have a lathe you can freak bore on do you?
"There he goes. One of God's own prototypes. A high-powered mutant of some kind never even considered for mass production. Too weird to live, and too rare to die." -Hunter S. Thompson
The G7 ram is put together the same, so it would be exactly the same mod to make it rebuildable.
Some rams this mod is really easy on, the retaining pin just falls out when you tap the ram against something solid. Then dissasemble, drill out the back, make a spacer/retainer ring with a hole for the retaining pin, and put it back together.
Other rams, the retaining pin doesn't come out so easy and you have to basically cut around it so you can grab it and pull it out like Dodgeballers did.
I have two magno rams, a G7 ram, and and an original A1 ram. One of the magno rams, and the G7 ram the retaining pin just fell out.
The other magno ram and the original a1 ram I've tried everything short of cutting them out (heating with a torch and rapidly cooling, banging, strong magnets, etc) with no luck. One of these days I'll do what Dodgeballers did with them.