The rod is then gently lowered into the rifle, the clip sprung on the muzzle and a blank cartridge inserted in the chamber. The safety pin is withdrawn just before firing. If, after the safety pin has been removed, the grenade is not used, the safety pin may be replaced if the screwed ring has not unscrewed and uncovered the two retaining bolts, but if these are uncovered the grenade is in a dangerously sensitive condition, and if so found should be destroyed. Only the special detonators and cartridges provided should be used. If by accident a grenade were fired with a bulleted round the rifle would probably burst and injure firer. This grenade is very safe to handle, as it cannot be fired by knocking or dropping on the ground; it must travel through the air some distance before the retaining bolts fall out. =Pendulum Dial Sights.= A pendulum dial sight graduated in yards, for direct aim or high elevation, is issued for use with the rifle grenades, and can be easily affixed to the leaf of the back-sight. Should the sight not fit tightly on the leaf, the spring sides should be slightly pinched in. =Grenade, Hand, No. 1, Mark 1. Description=: The grenade consists of a brass cylinder encircled by a narrow cast-iron ring serrated to break up into 16 fragments. The cylinder is mounted on a wood block to which a cane handle, with streamer, is attached. The brass cylinder or body of the grenade is filled with explosive, and has its upper end closed by the detonator holder, fixed by three screws. This holder carries two pins for securing the detonator. The body has fitted above the serrated ring two knobs and two indicating stops. The firing needle is carried in the removable cap, which has two grooves formed on it in which slide the knobs on the body. The cap is centrally pierced for the safety pin. On the outer surface of the cap are stamped the words “Remove,” “Travel” and “Fire.” When the knobs are in the groove “Remove,” as indicated by the stops, the cap can be removed and replaced; the central position, marked “Travel,” is to be adhered to normally; while in the position “Fire” the cap, after removal of the safety pin, is held in position by friction only, and can be pressed inwards to fire the grenade. The action of the grenade is simply that the cap is forced in on impact, carrying the needle on to the detonator, the cap having been turned into the position “Fire” and the safety pin having been removed before the throwing. =Packing=: The grenades are packed six in a wooden box. Cylinders containing 10 detonators, No. 1 Hand Grenade, Marks I. or II., are issued separately. =Preparation=: The cap is removed, a detonator is inserted in the recess, the grooves in the detonator being placed opposite the pins on the body, and the detonator is then pressed home and turned to the left (its flange being under the heads of the two pins) until the spring on the detonator flange is released thus locking it in position.