I've never done the slingshot method, it seems foreign and slower to me. Of course, I mostly shoot 1911s and BHPs, so it's more natural to me to use that way, as a slide release
. I have an M&P, too, but seldom shoot it much. I'm right handed, but usually work the slide release with my left thumb. It just works better for me that way. My M&P is an older one, a police trade-in, and still pretty tight. It's "okay" but has no character, like all the plastic-framed pistols, in my mind, anyway.
Last edited by ratsmacker; 03/31/20.