If yer into "doin' it yerself" go to a reputable hardware store-the one with all the small boxes of even smaller screws and things,pick up a few allen set screws #4,#6,#8(measure the desired length) get a couple of each cause yer gonna loose one(don't ask how I know) check and mark where the contact is wanted on the trigger gaurd,drill and tap the hole for the set screw,put a little dab of blue loc-tite on the screw,install it,set it and forget it...... I didn't have to do my G2 but have done a few other guns this way-that's how I'd do it. Just my 2c. SAS98M
