This one is a British 3" Mortar Signal Shell.
World War 2 3D Printed British 2" (INCH) Mortar Signal Shell Prop/Re-enactment
World War 2 3D Printed SMLE Grenade Launcher Prop/Re-enactment
World War 2 3D Printed British No 77 Smoke Grenade Prop/Re-enactment
World War 2 3D Printed M8 GrenadeLauncher for M1 Carbine Prop/Re-enactment
World War 2 3D Printed N0 74 Mk2 Anti-Tank Sticky Grenade r Prop/Re-enactment
World War 2 3D Printed M7 Grenade Launcher for M1 Garand Prop/Re-enactment