Ace, I have heard a few things about one company that makes them although I can't remember who they were. Reliability wasn't the issue; it was actually recoil. The lighter weight of the Glocks provide stiff recoil to some and the added weight of the stainless and/or the titanium platform helps with the recoil just as with any firearm. Let me know if you go for it. What caliber Glock do you have or are you thinking about purchasing?