The two little black pistols look like small caliber Berretta's. A old FN .32, the revolver butt you can see looks sort of like a Webley. I'd say the sawed off is a H@R but the barrel release is wrong. My brother has on like it but it has no brand on it.
A couple of MP-5 magazines, a couple of AKMS.
Hard to tell anything else from this picture. And those are just quick guesses before I run off to work.
So don't shoot me if I'm wrong.
What is the black stock looking thing in the upper left hand corner. Looks like an even unglier version of a Draganov stock than the ATI.