[mnehring]

Not a whole lot of carbines in .40. Your typical plastic KelTec and Hi Points. I think the best bet is a Ruger PC-4.

[Mariner]

Thank you sir. I've looked into the PC-r, my favorite so far. Brilliant idea to have pistol magazines...choose your vendor. Baretta. Glock. Sig.

You can get extended magazines for all of them.

Problem is they don't MAKE THEM ANYMORE and nobody wants to sell theirs.

I want three in 9mm and 4 in .40.

It's the perfect block defense weapon before the shotguns have to kick in.

A 180gr, .40cal bullet will leave the barrel at 1300fps. 9mm at 1400fps.

That'll work.