Ammunition for the 51 mm mortar has a small, ring-pull safety pin on the side of the nose-fuze. The fuze remains unarmed until the pin is withdrawn. Therefore, the safety pin must always be removed and discarded before a mortar shell is fired.
^"Contract Notice Supply of 60mm Mortar Barrels". European Defence Agency. "requirement for the supply of approximately 630 (six hundred and thirty) 60mm Mortar Barrels. This procurement is for Mortar Barrels only and does not include Ammunition. The procurement is intended to replace the in-service 51mm Mortar system."