The cap is then replaced and turned into the position “Travel.” The safety pin must on no account be withdrawn during these operations. The cap from one grenade will not invariably fit another grenade well, and steps should be taken to prevent caps and grenades being interchanged. =Throwing the Grenade=: When it is required to use the grenades, all on the belt should be turned to “Fire,” and the whipcord beckets and leather strips should be removed from the safety pins. When a grenade is taken from the belt, the streamer is unwound and allowed to hang free, and the safety pin is withdrawn immediately before throwing. The grenade is grasped by the end of the handle and thrown in the required direction, care being taken that the streamer does not get entangled with the thrower. To insure the grenade firing on impact, it should be thrown well upwards, at an angle of not less than 35 degrees. Should the grenade not be used the cap should be turned back to “Travel” and the safety pin replaced and secured by passing the whipcord becket over the cap and threading the leather strip through the slot in the end of the safety pin. =Grenade, Hand, No. 5, Mark 1. Description=: The body of the grenade is of cast-iron, serrated to provide numerous missiles on detonation. Into one end is screwed a centre piece, with separate recesses for the striker and detonator. The striker is kept cocked against its spring by its head catching on the end of the striker lever when the latter lies against the body of the grenade, pivoted on its fulcrum pin. The lever is retained in its position by the safety pin. The detonator is a separate unit, consisting of cap, cap chamber, safety fuse, and detonator. The action of the grenade is that, after the safety pin is withdrawn, on throwing the grenade the lever swings outward under the pull of the striker pin spring, thus releasing the striker, which fires the cap. The safety fuse burns less than five seconds and then fires the detonator. =Packing=: The grenades are packed 12 in a wooden box, together with a cylinder containing 12 detonators and lengths of safety fuse attached. =Preparation and Use of the Grenade=: Unscrew the base plug, insert the detonator, etc., into the recesses provided and replace the plug. The grenade is then held in the throwing hand in such a manner that the striker lever is held securely against the body of the grenade by some part of the hand. The safety pin is pulled out by the other hand just before the grenade is thrown. If not thrown the safety pin should be replaced. =Grenades, Hand, Nos. 6 and 7, Mark 1. Description=: The grenades consist of tin vessels filled with high explosives and are packed 40 in each packing case, with four haversacks. The “HEAVY GRENADE,” weight about 1 lb. 13 oz., contains an outer layer of scrap iron. The igniter socket is closed by a wooden plug for transit, and covered by a papier mache cap.