I'm not sure I understand the question. The P30 mags fit in the SK and they fire fine, but the X-Grip is made for the P2000 mags. The P30 mags are longer than the P2000 mags and so the X-Grip isn't going to fill the gap.
John (or anyone else), if you get a chance could you snap a pic of your SK with the X-grip and P30 mag? I'm (and a few others I'm sure) going to be ordering a larger mag for winter carry, am I'm curious if the X-grip still fills out nicely.
A forum dedicated to and laser-focused on Heckler & Koch firearms, Heckler & Koch accessories and the owners and enthusiasts that love them! Come join the discussion regarding HK pistols, long arms, NFA arms, HK accessories, HK history and trivia and more.