US Twin 20mm Oerlicon MK24 Mod 5. 1/48 scale. As used on a wide range of US Naval Combatants during and after WW2. Does not include front ring sight shoulder pads, or spent cartridge bag. These can be scratched or sourced from more suitable materials. Some very light sanding may be required to remove z axis lines created by the printing process. Primer, and acrylic paint can be applied for a smooth finish. Details and recommendations can be found in the forum.