Hi David! I think I replaced the magazine spring in yours with an original fxo type box (square spring?) The round springs will only fit mags with reliefs for the follower stops... Most all of the aftermarket box spring mags I have seen, have serious issues??.. As I remember with David's mags... we were making "silk purses" out of "Sows ears" and we turned out pretty good... just lost a little capacity... 7 instead of eight??...
... best to all, til...lat'r....GT
