 
 <prompt> Wetin be di kain guns wey dem dey discuss? Based on di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: The US finish World War I with two 3-inch AA guns and improvements dey happen throughout the time wey dey between wars. But for 1924 dem start work on top new 105 mm static mounting AA gun, but only few dey produce by mid-1930s because by that time dem don start work on top 90 mm AA gun, wey get mobile carriages and static mountings wey fit engage air, sea and ground targets. The M1 version get approval for 1940. During the 1920s some work dey happen on top 4.7-inch wey later stop, but dem come back to am for 1937, wey lead to new gun for 1944. 