I've just ordered a S&W 10mm fpc ,should be in to the FFL next week. Was going to put a red dot on it but after looking through my gun room I realized I have a vortex 1x8 lpvo strike eagle still in the box that I bought on sale over a year ago , think I'll mount that with some med rings and try that first ,anyone used a setup like this on a pistol caliber carbine and liked the results, I've watched YouTube videos of guys shooting this 10mm out to 200yds with red dots on steel so a lpvo is not that over the top , only thing I'm worried about is the scope is ffp so at 1x the inverted horseshoe type recital is kinda small ,but the illumination is very Bright, so should be OK in daylight.