RT valve w/ z grip

[MUNKYMASTA]

hey, ive had a z grip on my mag for about 1 month, and i want to put an rt on it. Do i have to do anything special to the z grip, like milling or anything?
thanx
joe

[a_malfunction]

Z-grips come in two varieties, some have a big hole for the origional RT's banjo bolt and the others have a regular hole for the standard (classic and retro) feild strip screw.
If you want to put a grip with a standard hole on an RT (the origional one) you'll have to get the hole milled out to fit the banjo bolt in it. If you want to put an RT z-grip on a mag with either a classic or retro, then you'll have to get the spacer that takes up the slack.

But it sounds to me you want to get a retro on a classic mag. If your grip fits fine with the classic, it will be fine with the retro.