I didn't get my M9-A1 from CDNN, but I do have one and it's really an under-rated pistol. A much better trigger than my Glock; ergo's are about the same. I like the full-steel mags. Stock sights are different, but easy to get use to...you can still swap out for traditional sights.
It's blockier than Glock and there are few accessories such as holsters. I'm happy with it; it's a great gun for what I paid (similar to CDNN).
ROCK6