I have been toying with an M&P core with a viper dot and am considering trying a red dot pistol in a ccw type set up. Reasoning is: After a bit of practice picking up the dot I am just as quick up close, more accurate at distance and much easier to get good hits while moving away from targets. i want an option smaller ( grip length and width) than my p229, so I am considering either custom milling something or trying a M&p compact frame with the core upper (most likely with RMR). Any input on what is doable and easier to carry than a p229. I am considering a p320 so I can easily swap grip sizes but does not seem too much ch smaller in subcompact than M&p