Originally Posted by
Coleslaw
I have seen M16's with egged pin holes. I will say these receivers had thousands upon thousands of rounds through them and were probably close to the end of their life expectancy. In any case, with the gov't paying a couple hundred dollars or whatever it is for an M16 lower, it may just not make sense. For a Colt M16 in the NFR owned by an individual, that makes a difference because of the value of the receiver. They can be repaired, but who wants to go through that crap if you can avoid the problem all together. With the improvements with the Gen2 stuff, it may be a worthwhile investment. You have to consider though, will you ever shoot enough to realize the benefit?