Now that we have replaceable backstraps it will be a cinch to experiment with modifying the back of the grip. Get some extra backstraps and try some things. Worse case is you ruin a couple of dollars of backstrap instead of the whole gun. I want to specifically reduce the curve (hump) on the lower half of the grip, thinking it may help natural point of aim. On another note, extra backstraps gives stipplers something realistic to practice on. So, where can I order extra backstraps from? I would hope worst case I could order from Glock but the G4's are so new they may not have built up any spares yet.