I fly an electric powered Carbon Cub with fixed gear and 52” wingspan. I’ve presently 44 full flights with it. I see the excellent flight skills demonstrated by my friends in Japan 🇯🇵 here.
The cowling machine guns were manually cocked for firing. ( Zero ) Wing root cannons or cowl guns selected by a left hand lever very much like a motorcycle clutch lever arrangement and trigger mechanism. Cowl guns must interrupt to avoid propeller. Early Zeroes and Honor Prosperity Nakajima Sakae had collected exhaust with two ejection stubs just forward of wheel wells. A beautiful model scene here.