the underside of your uppers where teh mags fit up against the bolt carrier.I am having problems where the front corners of the mags fit int he upper. My model one sales upper has a round corner instead if a 90 degree corner. My problem is the front of the magizines where they are crimped are hitting the upper. I believe the problem is the magizines. the crimp is half ass done leaving a sharp corner that catches the upper. a little dremel will fix these mags but i want to make sure the upper is ok. so if  possible show me the underside of the uppers. thanks

You're really breaking your neck to make those "el cheapo" mags work. Just chalk them up as a loss, grab some USGIs and move on

yep im a tight wad.i hate to admit it but sometimes i just dont want to let go. i will end up tossing them. most likely at the ass who sold them to me at the gun show.