I just got done rereading the review of the SAR ST10 in the Sept. Issue of Combat Handguns. I had read it before, and thought " here is a nice beefy pistol that should make for a decent handling 45acp", but I think I changed my mind. I still believe it would make a nice 45, but with its design and steel/aluminum construction , I think it would make for a great 10mm. It looks beefy enough to tame full power 10mm loads. Besides, there's the name, ST10 or ST-Ten ( reminds me of Bren-Ten) , just seems to fit.