Are your observations from personal experiences or what you have read, etc?
i don't do that he said she said bs. when i state something on this forum it is fact that i know to be true, or something that i have seen/experienced myself.
i am not a weekend warrior, and i am not a square range tiny size group shooter, i train for a fight, therefore i run my guns hard, and i go to training courses. Put it this way i have spent 10days of my life in carbine training courses at a big named company that deals with training, the majority of issues were with DPMS rifles, i didn't dissect the guns when they went down, i didn't have time to get all the details, as i am worried about my training and not so much about the other people there, i would however make notes on brand and such if something did happen. the only time a stag, a bushmaster( i used one), a colt would have trouble was when the operator didn't lube properly. I will have to try to find my notes for the exact amount of issues and numbers of guns that went down. i didn't have any issues, i love grease.
furthermore, there are folks out there that see more rounds fired down range a year than 99% will shoot in their lifetime, and i have mad respect for them and their opinions, they say that a certain gun, piece of gear etc isn't a fighting gun, or something worth staking your life on then i am gonna take note of that.
So not only do i have personal experience with folks with guns that went down hard, many experts in the field and many people's experience and opinions that i take very seriously have nothing good to say about dpms. none of my opinions are based soley on the fact of what someone else has said.
95% of gun owners/ "shooters" will be served just fine with a lower grade ar15 like the dpms, and olympic arms. and 95% will never see the need and the reason for the gun that cost a little more, but runs 100% better.