I was thinking about this. Sig P320 in 40 are cheap, $349 at CDNN. Add a new tungsten grip for $299, Gray guns trigger kit, mags with base pads, you’ll have a heavy limited gun. I don’t consider the Gray trigger gunsmithing, but it will be worth the 1/2hr. effort. I’ve shot a Tanfo Limited worked over by Henning, and it’s a great gun for the money. Love the Tanfo grip. But it will benefit from gunsmithing. For your price range and requirements, your choices are few.