Those anti-aircraft tripods for MG's aren't unlike the Mk1 Bren tripods. The down-side is that there's a bit of unease about taking on aircraft, stood behind, say a wall or vehicle while shooting tracer at them. The trouble is that by definition, they are up there actually LOOKING for trouble and have 20mm cannons. You pi55 them off at 700 yards with 7.62 and they REALLY pi55 you off at 1mile with 20mm. And they immediately know your position because you've just been shooting at them. Nope........... not a fair contest. I say leave aircraft for blowpipe!