Riot - CN Gas - M25

Diameter, inches

Filling

Weight of filling, ounces

Delay, seconds

2

Description: The Riot Grenade M25 is made of phenolic plastic. It is spherical in shape and is formed from halves cemented together. Inside sleeves, integral with the halves, form the casing for the firing components. These sleeves telescope; the lower is cemented into the upper. The channel is thus formed through the center of the grenade receives the firing mechanism. A plastic closure plug in the base of the lower sleeve has an integral firing pin on the inner side. A filling closure plug is located ½ inch from the firing-pin closure plug.

The fuze assembly contains a primer, a two-second delay element, and a detonator. A slider holds the fuze assembly cemented inside its lower ends, and a hole in the upper end receives the safety pin. Two safety balls fit under a projection on the slider and hold it in the unarmed position until released into the grooves when the arming sleeve is ex-pelled. The firing spring fits over the slider and is compressed between the projections on the slider and the upper end of the lower sleeve. The arming spring is compressed inside the arming sleeve, which in turn rests in the channel of the upper sleeve, extending 5/16 inch beyond the grenade body. Holes through the arming sleeve provide for the entry of the safety pin.

Operation: When the safety pin is withdrawn, the arming sleeve is expelled by the compressed arming spring; this permits the two safety balls to recede into the grooves, releasing the slider, which is driven against the firing pin, activating the primer. The fuze provides a two-second delay before detonation. With shattering of the plastic body, the micropulverized CN is dispersed in a cloud.

Figure 227. Riot Grenade - CN Gas - M25