Just purchased my 15-22 a few days before xmas. It is a new rifle, but the serial number is a DTH model. After reading this thread, this rifle must have been sitting on the track for quite a while! Was given lots of extras, too. Extra mag, 500 rounds of ammo, fore grip, and hand guards for the picatinny rails. All of this for under $400!

I haven't shot it yet, so I don't know if I have a good one our one that needs fixes from smith & wesson. What are all the things I need to look for?