I tested one out several times when I was hunting for a new CCW. I liked the NANO, except I constantly shot low with it. Now, I'm by no means the greatest high accuracy shooter and make no claims as such, but I can hold a pretty decent group with most all my handguns. But everytime I fired that NANO I was low, low, low. The local range had a special a few months ago run by Beretta to test drive the NANO and a couple others for free and get a free hat. I have like 4 of the hats cause I kept doing it trying to make myself believe it would get better. Maybe it was just me, I dunno. I finally gave up and got a Sig P938. My first few mags with it were a bit loose on accuracy, but it got better after 150 or so.