[Pip]

I'm working on it now, but there is a link somewhere with pictures. All i'm doing is using some 1mm thick sheet styrene from a hobby shop (the type ppl use for model railroads etc) and cutting a small piece to fit on the underside of the mag catch on each magazine. Glue it in place with something solid and file down the edges to give it a smooth action. Spray it with some black or wtv and away you go...

I'll have a look for the link..