[swatt13]

well since you broke your tab, you might as well mod the upper reciever so you can break it down without haveing to completley disassemble the gun next time.

cut the two (well the remaining tab) off the other side, and on the right side there is a long tab like deal that you need to cut off as well. pretty much make it so both sides end right after the machined edge of the upper reciever, and look uniform (mirror each other)... make sense? they should be smooth and uniform, your not cutting anything major i should not, you should be able to just grab a pair of pliers and snap the tabs and the lip off.

once this is done, there is nothing that will snag the mechbox, mag catch, body pin, front of the mag well. when it coems to break down the gun, you remove the front pin, slide them apart (much like you were doing), but there is that tab on the top of your mechbox that i think tm put there to prevent your gun from slideing completley apart by accident. slide the reciever forward till it catches that tab, then pull the chargeing handle back and lift up on the charging handle to bypass the tab. goes back on the same way reversed. (slide back till just before the tab, pull chargeing handle back and up to go over the tab, continue slideing reciever back.