23/06/2026
Tuesdays item of interest, a nice example of an Mp.40. This one was picked up at the end of the Occupation by the chap I got it from. It had had the conversion to make it semi auto only and fully legal as required by our laws here on Jersey.
Made by ERMA - Erfurter Maschinenfabrik B. Geipel GmbH, Erfurt, denoted by the “ayf” code in 1941.
Below is some further information on the Mp.40 taken from the internet which may be of further interest.
The MP 40 (Maschinenpistole 40) is an iconic 9mm German submachine gun developed in 1938 by Heinrich Vollmer and widely used by the Axis powers during World War II. Often mistakenly referred to as the "Schmeisser", it revolutionized small arms manufacturing as one of the first weapons designed specifically for cheap, rapid mass production using stamped sheet metal and early plastics (Bakelite).
Caliber 9×19mm
Action open-bolt, straight blowback
Rate of fire 500–550 rounds per minute (highly controllable)
WeightApproximately 8.8 lbs (4 kg) empty.
Capacity 32-round detachable box magazine.
Effective range 100–200 meters.
Design & Tactical InnovationInnovative Engineering:
Transitioning from its predecessor (the MP 38, which used an expensive milled steel receiver), the MP 40 relied heavily on stamped steel and spot welding. This drastically reduced skilled labor needs and production costs.Compact Portability: It was one of the first military small arms to feature a metal under-folding stock. This made it highly compact and ideal for paratroopers (Fallschirmjäger), tank crews, and squad leaders.Controllable Fire: Because it lacks a semi-automatic fire selector, it fires exclusively in full-automatic mode. However, its slow cyclic rate of fire makes it so stable that shooters can easily squeeze off single rounds with basic trigger discipline.Under-Barrel Resting Bar: A unique resting ledge (or bar) was added under the barrel. This allowed soldiers to hook the weapon over the side of open-topped armored vehicles (like halftracks) to fire accurately without the recoil bouncing the gun out of position.
Known weaknesses Stoppages: The MP 40 utilized a double-column, single-feed magazine. This design forced the two columns of bullets to taper into a single line at the top, making the magazine highly sensitive to dirt, mud, and debris, which frequently caused feeding jams.
Wobbly Stock: While highly innovative, the under-folding stock mechanisms were prone to wearing down over time, becoming loose and unstable during extended combat use.