I've not worn anything out. I bought a real lemony 1911A1 that was a real frankenpistole, it had a shot-out barrel (as in only 50% rifled), but I did not know then if the barrel was original to the loose (very loose) assemblage of parts or not. Closest I can get is my Colt Series 70, which was close to new when I bought it used.in 1986. It's had around 10k rounds run through it. Been through 3 barrel bushings (two collets before going to solid), and it needs the front sight staked again. But, no signs of being worn out.