My grandfather-in-law was a B17 commander and has a beautiful picture snapped from the cockpit of a 410 with the big cannon (looks like a wasp stinger in the picture, its sick) passing off his right wing. In the forground on the B17 wing there is a big freakin hole where that big cannon hit them. Thankfully it was a single hit and punched through pretty clean, they went home intact.
Anyhow, I've never done the serious research on the 410 but according to him, they were very rare and never a serious factor in the war... In fact that he claims that his photo of that one with the big cannon is the only actual combat photo ever taken of that varient (obvoiously there are lots of non-combat photos like above)... Anyhow, I don't know if a plane that rare belongs in AH.
Would be fun to play with though!