Recoil, Safety, Reliability There are many similar excellent threads, but I have a unique question. I have NO experience with the 45 Super, my only real expertise is with water guns Someone is buying a G21 or G30, but wants to use it often in the lower 48 as a woods side arm. He has a couple of choices that I don't have experience with, so I'm asking which is most reliable, safe and how the recoil may compare. G21/30- Spring change, recoil buffer. Stock barrel shooting 45 Super. G21/30- Spring & Magazine change, 10mm Conversion Barrel. G20/29- Skip the rest and just buy the woods Glock 10mm. Option4- Tell me what your preference would be.