This is a combination of 2 models.
Complaint Dept Name Plate and Grenade Base by Nick S | Download free STL model | Printables.com
Prop Grenade by QuadView | Download free STL model | Printables.com
Very simple design to print and to get parts for. I put them onto multiple plates for different colors and did the sign in multicolor.
From the original author, what you will need…