Easy print Nerf Trilogy / Shellstrike Shells (Elite + Mega + Rival)

My version of the Shellstrike/ Trilogy Nerf Shotgun Shell.
Instead of the 3 individual notches of the original I gave the model one continuous recess. This makes the printing process easier and faster as well as making the resulting model stronger.
It also looks nicer in my opinion.
*Thanks to popular demand I now also made a Mega Dart shell ;P
** I now also designed a Rival/ Mega combination shell. I haven't seen that before. The bore diameter changes after about 1/3 of the shell, so you can shoot both Mega Darts as well as Rival Balls from it

If you can, print the shells with flexible materials like TPU.
It makes way less noise if the shell drops to the floor and there is also no risk of damaging the shells.