I’m not seeing a space for the gatling gun.
Rutan’s ARES, the predecessor to this aircraft:
https://www.youtube.com/watch?v=zG9LlHcX8lg Turbofan Killer Bee: Rutan ARES “Mudfighter” for U.S. Army Close Air Support
“By the time construction started in 1986, the design had evolved to the current configuration: an asymmetric design with the engine inlet on the left side of the fuselage, a single Pratt and Whitney Canada JT15D-5 turbofan engine (same as in the Beechjet/T-1A Jayhawk), and a GAU-12/U 25mm gatling gun on the right side.”
http://stargazer2006.online.fr/aircraft/pages/ares.htm
Specs:
Wingspan: 35.0 ft. (10.67 m)
Length: 25.5 ft. (8.97 m)
Height: 10.8 ft. (3.0 m)
Wing Area: 191 sq. ft. (17.49 m²)
MTOW: 6,7 lbs.
Start mass: 2767 kg
Empty Weight: 3,6 lbs. (1,308 kg)
External/War Load: 900 lbs.
Internal Fuel: 2,2 lbs. / 333 U.S. Gallons
Stores Stations: 4
Internal Gun: 1 x 25mm GAU-12/U
Maximum speed: 763kph
Maximum speed @ SL: 305 Kts.
Maximum speed @ALT: 375 Kts.
Maximum cruise @ALT: 210 Kts.
Stall speed @ SL: 78 Kts.
Maximum Climb Rate @ SL: NA
Service Ceiling: NA
Tactical Radius, Internal Fuel: NA
Ferry Range, Internal Fuel: 1,15 n.m.
Maximum Range, External Tanks: NA
Wing Loading: 32.4 lbs./sq ft.
Power/Weight or Thrust/Weight: 0.48 to 1
Load Limits: 8G
Takeoff Distance: 1,5 ft.
Landing Distance: 2 ft.
Flyaway Cost: 1 to 5 Million USD
Armament: 1 x 25mm cannon, bombs or missiles