Experimental Thompson Stock

Sorry, things are a bit light this week – more good stuff coming next week. For today, I have an interesting Aberdeen Proving Grounds catalog photo of an experimental stock for the Thompson SMG. Presumably this was intended to reduce the gun’s tendency to climb in full-auto fire. No idea how well it worked, but obviously not well enough to be adopted. Anyone have more information about this line of testing?

Thompson SMG in experimental stock
(click to enlarge)