The OP said that the pistol is smaller than a G17 yet larger than a G19; based on that statement, I'm guessing we're talking about the full-size.
The size of the M&P9 FS roughly splits the difference between the G17 and G19, while the M&P9c roughly splits the difference between the G19 and
Thanks! I'm not very familiar with the different Glock types.
Is this not also the size of a Beretta Storm Compact (7in by 5in) in case you might be interested in a DA/SA format option?