Guns, Dogs and Blades QnA

PCC recomendation?
Anyone have experience with the various Pistol Caliber Carbines/SBRs that could share or give recommendation? I'd like to get one in 45 ACP because that is the caliber I use the most. Second choice would be 9mm. Conceal-ability and compact size is a significant feature and being able to unlimber and put into action quickly is important. I would be carrying concealed in a pack or bag for security detail I am part of. Besides that, they look like a lot of fun to play with. Magazine type isn't a big concern, though higher capacity(13+) is more desirable than the standaed 7-8 from a 1911 mag. At some point a suppressor may come into play but that is not the main focus. The CMMG Banshee looks pretty neat but isn't foldable as-is far as I can tell and is at the top of my price range.