To me it seems that the weak spot on Glock pistols is the area at the end of the slide that hangs down and accepts the recoil spring assembly. I have seen a lot of them broken and bent. I got to looking at my other guns and all of them have very beefy areas in the same spot. I wonder why Glock is so slim and thin in that area ? When you drop a Glock slide , it seems that this is the area that gets broke or bent.