What's your favorite gun?

Saw this nice DPMS ar15 at walmart for $575 right after Christmas .223 caliber. Went to leave to go home and get the cash and come back. Just as I was leaving another guy was filling out the paperwork. Let's just say I was pretty jacked. It had a laser, flashlight, red dot, pistol grip handle, fore grip, and all kinds of stuff. Gonna maybe do a build sometime soon with one