Those buffers don't do a whole lot of good unless you have a weakened spring or you are using some hot ammo. They wont have any down side..It's just the weapon was designed to do what it does with standard ammo so it should be OK. I use them on some of mine just because I have them I guess It's good to keep an extra spring around. you can use it to compare your working spring and if it gets to where it's shorter by 2-3 coils you will want to change it. A standard 1911 spring is 16# in a PT1911. I use 18's in most mine though. It just keeps things a little tighter when it's in lock up. I reload most my range ammo and it's a little hot sometimes too. The 16# spring is plenty good for most applications. Bar-stow makes great aftermarket barrels. You should never be able to shoot out the barrel is in it. Now should your kids be able to as long as you are using non corrosive manufactured ammo. BUT, Taurus says they use a match grade barrel. I question this a little being it looks like a standard barrel with the standard link and pin to me. I will say the lock up is pretty good on the PT1911. It is tighter than my Springer Mil Spec was. So if you're getting good groups now you might not want to look that direction. And if I was building a custom target weapon I don't know if I'd use that frame. I really want to torture the ones I have with several thousand more rounds before I say it's as good a frame as I could get elsewhere for such a project.