It's roughly the size of a kel-tec p11(which has been out for a couple of decades) and holds the same number of rounds, so it's not like manufacturers were somehow unable to produce a 9mm this small with a 10 round capacity. Perhaps it is with good reason the top tier manufacturers refrained from doing so since the smaller you go, the more difficult it becomes to make a reliable, durable and shootable weapon, but the current trend is towards micro which isn't necessarily a good thing. The p365 has been plagued with problems from the start and based on what I'm seeing on the Sig forums, they are far from being resolved as new ones keep popping up. If someone handles it and likes it, I would wait at least a full year or two minimum before considering purchasing it to see if they can get the problems worked out.