I've owned (2) 40 S&W Ruger Police Carbines. Both were great rifles, especially the first one since I only paid $279.00 for it! I lost that one in my divorce, and I got rid of the second one when I needed room in the safe.
I want to get another 40 Caliber Carbine, and I have it narrowed down to the Ruger or a Just Right Carbine.
The Rugers are great, but they are commanding some pretty steep prices these days, as are the magazines.
I like the JRC for a few reasons. Price, they accept Glock mags, and they are easily converted to 9mm and 45 ACP. The Gen III appears to be especially nice, as a take-down model is offered. I know some early versions of this rifle were problematic. Does anyone on here happen to have one and want to give some feedback?
One other option is an AR style. I emailed Palmetto to see if they are considering designing a 40 S&W model, but I haven't received a response.