At a glance, most everything listed on DPMS is incorrect.

The gas key is "properly staked", has m4 feed ramps, and a heavy barrel all standard... I didn't look beyond that, but if the first 3 I look at are wrong??? Crappy list.
Unless you go up in caliber, you can polish all you want, make a turd out of solid titainium... Still a turd.
.223 caliber - Poodle shooter