The 40sw barre and the sp01 9mm barrel share the same od. The sp01 barrels are a little thicker than standard 75 9mm barrels. The blue follower mecgar mags work with both 9mm and 40 though the markings don’t match for both.Nice!
I don't know that could be done. That's cool.
Yeah, my 85 is an ambi 75. Svelte for a double stack. The action is smooth as silk. It's got some kind of wonder finish on it that I swear you could pour a quart of oil on it and it would soak it up without feeling slippery.