L1A1 Problem

[skiprat]

with the correct tool (long rod with screw driver at the top) it "should" just unscrew......(try starting with a normal large flat screwdriver, just to get it started then when its moving return to the proper tool) there is nothing else to stop it .. If the return screw is seized in the return spring tube (I've had it happen a couple of times) the result is you will, with some effort, unscrew the whole return spring tube from the trigger Mech. housing.
at this point the butt will come off as required, now all you have to do is strip the recoil spring nut from the tube using a bench vice..