TP-7, 9 ton, classified as light, was (according to my source) the most modern Polish tank of that time.

Polish tank 1939

Here is a good quality picture of Polish machinegun, nicknamed Błyskawica (lightning), made in conspiracy, in workshops, during German occupation. It wasn’t one of better guns of that time but with Sten 9 mm ammunition it was functional. Also Stens, Vis pistols and two kinds of hand grenades were produced in Poland, in conspiracy, in that time. 

Warsaw Uprising 1944

Inspection of tanks and crews before the war.