I know that Hi Point made a prototype of the 4095 in .357Sig-- not sure if they will ever release it-- would be nice though. I am not sure if you could rebarrel one for it yourself though--
I did look at getting a junked 995 and rebarrel it to .380 just because-- but a change in employment and wages put that on the "in development " basket...
I think the 4095 could handle it-- it is rated for +P .40, so I would think that if your chamber/barrel was .357 (9mm) in size, you would be ok..
no warranty though, and I would only do it with a gunsmith's approval first...