In 1943, the British government began a program to develop a shortened and lightened version of the No1 SMLE rifle, for production in India and Australia - where the national ordnance factories had not converted to production of the No4 rifle. This prototype is the first pattern produced by the Ishapore Arsenal for testing. Its barrel is cut down to 16.5 inches (plus a 2.8 inch long conical flash hider), it has a unique 3-position flag style of rear aperture sight, and has had its sling swivels repositioned. This rifle was tested in the UK, and some modifications were recommended. A second pattern from Ishapore was then provisionally approved as the No6 MkI on September 1st, 1944, but cancelled before production could begin. The Australian pattern of No6 was approved a year late in September 1945, but then declared obsolete before it could be put into production. With the end of World War Two and Indian independence in 1947, the funding and impetus for a new short rifle were lost, and instead Ishapore would end up converting its production to No1 pattern rifles in 7.62mm NATO a few years later.