Congrats on the 15-22. I also bought a new one yesterday.
Cabela's has the "Optic Ready" version (
Model 12722) for $300 during their 2nd Amendment sale.
I ran 75 rounds thru mine yesterday with no problems. 50 rounds of Aguila HV 40 grain CPRN and 25 rounds of CCI Mini-Mags.
I cleaned mine before going to the range and it looked like the inside of the barrel was coated with black grease. It was the dirtiest barrel on any new gun I have ever seen, in my very limited experience. It shot great once I got it to the range.
I came home and ordered some extra mags and an angled grip for it.
The other first impression I got when taking it apart when I got home was that there isn't much steel in this thing, but it felt great when shooting it.