Ali Nerf Gun Shell

This is the shell of a Nerf gun I bought from AliExpressThe standard is different from that of a regular nerf gunㄴ Mini S686 The specification of the bullet is about 12mm in diameter and 58mm in length Due to lack of design ability, we designed it in a cylindrical shapeThe inner diameter is designed to be slightly narrower so that the bullet does not flow down even if the shell is turned overIt works perfectly even with the discharge of the shellThere is no problem if you set the output up and output it as PLA default