"chernaya koshka" bolt action shell ejecting nerf dart sniper blaster

This is a shell-ejection nerf blaster with bolt action operation mode and single shot, single load. It has a 200 cc cylinder and a 750 mm long barrel, which made it more accuracy and powerful than the other nerf blaster. Its hardware parts are partially fully metric and can be easily obtained from shopping websites. You can print it with a printer with a size of 200200200mm or more, It is only necessary to change the segment size of the barrel yourself in the STEP file.