What are those rifles?

If I remember correctly they are Riesing .45ACP submachine guns, a rare and hard-to-find WWII era SMG. It was designed as an intended replacement for the Thompson SMG, but was surplanted quickly by the M3 "Greasegun".

My spelling of the name may be off but I'm pretty sure that was the one..

My fault- I shoulda Googled before I posted:

They are Johnson M1941 30.06cal semi-automatic rifle, an unsuccessful competitor with the M1 Garand rifle. It was designed just prior to WWII as a potential standard-issue US rifle but lost out to the Garand. It was used by Marines in the Pacific, who requested more of them, but was never officially adopted by any American military branch.

It's extremely rare today and a highly valuable collector's piece.