IMO, yes, it would be a waste of money to buy a stainless bbl bushing and springs. There is a chance that the bushing won't fit exactly right -- like a thousandth of an inch -- and you'll turn a reliable gun into an unreliable gun. Don't risk function for looks, or at your funeral, people will say, "But on the bright side, his gun
looked good!"
Ditto springs. If your springs don't work, replace them. If they do work, for God's sake, don't replace them!
Recoil buffers are malfunction-inducers. Avoid them.
If your gun is the "GI" version with the teeny sights, there's where you can spend your money. Replace them with something decent, like Novak or Heinie. If you have money burning a hole in your pocket, get tritium inserts. On the other hand, if your gun is the "Mil-Spec," it already has decent sights, plain black. They are fine sights that do not need to be replaced.
A trigger job is going to run you around a hundred bucks. Borrow a trigger scale from somebody. The trigger pull should be not less than 4 pounds, and not more than 5. If your gun has a 7 or 8 pound trigger pull (not uncommon in factory guns), then that's where you should spend your money.
A fighting pistol needs good sights and a good trigger. It needs to be reliable. Spending money on anything else is flushing money down the toilet. If the sights are already OK, save your money. If the trigger is already OK, save your money. If the gun is already 100% reliable, don't spend money trying to make it "more" reliable than 100% - that ain't gonna happen.
Looks? You're going to carry it concealed! Who cares how it looks?
