Soviet World War Two 50mm Light Mortars (RM-39 & RM-40)
The Soviet Union's development of 50mm light mortars, specifically the RM-39 and RM-40, focused on simplifying production and improving operational safety. The RM-40 introduced stamped sheet metal for bipod legs and a simplified range scale adjusted by gas venting. Its base plate design was also improved to redirect vented gas away from the crew, enhancing safety during firing.









