Wearing out firearm is normal
People in this community are always looking for something that doesn’t break or wear out or is tougher than all of the others. When we move away from the weekend warriors with their $2000 AR15 that they keep clean and probable wash and wax in their driveway in a bathing suit. Guys that put serious time in on the range will be the best ones to tell you how well things hold up and which parts or guns are better than others. There has been much discussion about this issue between direct impingement and gas piston AR15s and how much wear the bolt carrier groups have and there are differences.
I remember seeing Eric Clapton with his worn out guitars and wondering why he would use something so beat up, Eric Clapton knew that if you played guitar long enough things would wear out but the instrument did the job. When you buy your Glock pistol and the Glock Factory barrels wear out, you should view that as an achievement and not something to be critical about for your firearm. Some guns absolutely do not last as long as others, but the life span of gun does vary. Some AR15 designs only lasted about 7000 rds while others now are 4x’s these days.
