A variety of hatches and cupolas compatible with many popular plastic kits from the grimdark future. These include your choice of rail-mounted weapon.
The hatch is a separate piece and can be assembled in the open or closed position.
Sized to fit 15mm and includes ring adapters for 18mm and 20mm.
20mm (Chimera turret and hull, most Tiny Panzer Studio designs)
18mm (rhino-based and Landraider-based Space Man vehicles)
15mm (Regal Dorn)