Soviet World War Two 50mm Light Mortars (RM-39 & RM-40)
This video provides an expert-level overview of Soviet 50mm light mortars, specifically the RM-39 and RM-40, presented by Ian McCollum of Forgotten Weapons. It details their historical development, technical specifications including a unique gas-venting range adjustment system, and mechanical features. The video also covers their comparison to German counterparts and their post-war surplus history, including Finnish capture and US importation.






