Well not really a new firearm but I did get my Advantage Arms LE .22lr conversion for my Glock 19 today. First thing I did was clean it up and oil it(as I do with any new firearms) and headed to the range. I put a total of 500 rounds through it to "break it in" and I was very impressed. The first 400rds where CCI Mini-Mags and the last 100rds where Remington Golden Bullets (which AA recommends in their kits). I only had one malfuction, it was a FTE on the 2nd round....other than that it was flawless. I did remove the slide and reclean/oil it every 100rds. I didn't really check for accuracy (will do that next weekend when I have more time) but I was nailing our 8" steel plates at 25 yrds without a problem. Overall I'm pretty happy with it and I think it'll make a great addition to my G19. Also ordered 2 extra mags from AA on Thurday and already got the in the mail today too.