The light AA rules are a total exaggeration of the effectiveness of machine guns against airplanes in WW2. First, you have the Soviet HMG on a cart, which cannot elevate to shot into the sky. (We admit that there was a variation which could elevate, but there were only about 2,000 made, a small fraction of the hundreds of thousands of Soviet HMG.) Only by an SSR should they be available. Then you have the very succesful German 20L gun, which had sights and a type of range finder, which did in fact shot down numerous airplanes, rated to fire as a four in light AA. Don related to me that there were thousands of 50 cal HMG on vehicles in the American Army, but they were quite ineffective. They had a 20 round drum, which they emptied very quickly. They were useful for morale purposes, but few shot down airplanes! Don Deibler in the early 1970 had hundreds of WW2 veterans in his medical practice. He always interviewed them about their combat experiences. Many of whom were ex-German POWs. They were attracted here to Lancaster County because of abundant jobs and the large German population. None of them ever saw a HMG shot down an enemy aircraft! Tim