An improvement on the RM-38 mortar, retaining the original gas vent system for adjusting range; while mechanically novel and eliminating the need for manually handling booster charges, it was also complicated, and would be eliminated from later Soviet mortars. Built around a blued steel tube, with bakelite fittings for the gas system and green painted bipod and baseplate.

Fine, 40% original blue finish, with areas of brown and gray patina, mild spotting and light handling marks, with some scuffs on the bakelite and flaking of the paint. Mechanically in fine order. NOTE: This Destructive Device is a National Firearms Act (NFA), fully transferable Class 3, which is registered with the Bureau of Alcohol, Tobacco, Firearms and Explosives, (BATFE) under the provisions of 18 U.S.C. Chapter 44 and 27 CFR part 479, National Firearms Act.