You mean the P345? I've never heard of an SR345. The P345 is a cheap single stack .45 ACP, polymer framed pistol.
It is good for what it doesn't cost, but I found the gun to be muzzle flippy with hot +P loads. I think it has a higher bore axis than even a Sig P220, but it wasn't absurd. Still plenty controllable. I think it has a mag disconnect in it though, which is dumb... but probably something you can get disabled.
I wouldn't buy one, but if I needed a gun and I was short on cash, I'd buy a P345 long before buying something cheaper than it, though.
-Mike