Traced my earlier colored pencil drawing of my Lanchester Mk I submachine gun on my iPad Pro 7 in the procreate drawing app with my Apple Pencil.
The 9mm British Lanchester submachine gun was adapted in 1940 and was a pretty blatant copy of the German Bergmann MP28 II submachine gun. At the time, there were really only three submachine gun designs in play- the Bergmann MP18 design and its variants, the various versions of the Thompson Submachine gun, and Germany’s then-new MP38/MP40. The US military demands and wartime chaos cut off sufficient supplies of Thompsons to Britain so it was thought to seek a copy of the Bergmann. This was the Lanchester, made by the Sterling Armaments Company (who would later make the Sterling L2A3 of Cold War fame) and it was mostly a straight up copy of the German MP28 II. Differences included a wooden buttstock that more resembled a Lee-enfield bolt action rifle and a bayonet mount for the standard Lee-Enfield No. 1 Mk III bayonet. Certain fittings were made of brass. The magazine was a long side mounted 50 rounder that had reliability issues common at the time and the mags would work in a Sten Gun which would replace the Lanchester in production shortly. There were two variants, a Lanchester Mk I and a later simplified Mk I*. The latter would fire only in full automatic but the former was select fire.

The Sten gun would later replace the Lanchester in production and the Lanchester would end up mostly serving in the Royal Navy, either as ship armory guns or else by landing parties. If one ever wonders why the Sten gun resembles a skeletonized Bergmann MP28 II, the Lanchester may explain why. The Lanchester was indeed a historic first as it was the first submachine gun made in Great Britain (all the Thompsons were imported from the USA). This drawing was also a historic first for me as it is my first iconic gun drawing done on my iPad. (I’ve done a few on my iPhone)

Update; I lengthened the buttstock, seeing it was proportionally too short, and I saw this was a Mk I* gun as select-fire units were only on very early guns and spare parts for selector switch were removed from repair parts catalogs by the British to expediate conversion to the Mk I* configuration.  None of my reference material had a Mk I configured gun and pictures seem extremely rare as it seems neraly all Lanchesters existing today do not have the provision for select fire.