All ammunition which is exposed to the sun and heat is likely to produce dangerous pressures, even in weapons that are in good condition. In addition, ammunition may be dangerous for any of the following reasons:
(a) Removal (either deliberate or accidental) of safety devices from fuzes;
(b) Use as booby traps laid deliberately by the enemy;
(c) As a result of subjection to shelling or fire.5
Consequently, care should be exercised in the use of any enemy matériel to be sure that both the ammunition and the weapon are in good working order.