so that dude that posts on AR15 "Henderson Defense" i think its a shooting range in Las Vegas, his posts are pretty interesting, he has pictures of cracked slides from Gen 3 and Gen 4 9mm's, he says they had well over 100,000 rounds shot. I don't think I will be able to break a glock slide, but its interesting that both the Gen3 and Gen 4 broke in the same place. Thus I suspect the Gen4 spring was an "attempt" to fix a problem, but 100,000 rounds give me a break, I bet there is not a single Sig P228 or 229 out there with 10,000 on it not broken.
