Figure 12-7.--Three main parts of the grenade.
Figure 12-5.--Typical smoke grenade.
GENERAL CHARACTERISTICS OF
HAND GRENADES
weapons, is very short. This range depends entirely on
the throwing ability of each individual. As a well-trained
Seabee, you should be able to throw a grenade, such as
the M67 fragmentation grenade, about 35 to 40 meters.
The EFFECTIVE CASUALTY RADIUS of a hand
grenade is defined as the radius of a circular area around
the point of detonation within which at least 50 percent
of the exposed personnel become casualties. The radius
is about 16.5 yards (15 meters). This radius is small
compared to the effective casualty radius of the other
Figure 12-6.--Practice hand grenade.
Seabee weapons, such as the 60-mm mortar. You must
remember, however, that casualties can and do occur at
M8 colored-smoke hand grenades are the same size
distances much greater than the so-called effective
and shape as the HC smoke grenades. The M8 will
casualty radius.
produce red, green, or yellow smoke for 1 to 1 1/2
Except for the M36A2E3 fragmentation grenade with
minutes when ignited. The color of the filler is indicated
the M217 impact fuze, the grenades do NOT detonate
in writing on the body of the grenade, and both ends are
on impact. All casualty-producing grenades
colored the same as the smoke the grenade will produce.
(fragmentation and white phosphorus) have a 4- to
The M8 is used for ground-to-air or ground-to-ground
5-second delay fuze. Chemical grenades, except white
signaling (fig. 12-5).
phosphorus and the M25AZ tear gas grenade, have a
2-second delay fuze element.
NOTE
You can compare a hand grenade to an ordinary
Under the new standard marking system,
firecracker. It consists of a paper body filled with
these grenades have a light green body with
gunpowder that is set off by a fuze. For example, when
you light the fuze, it burns until it reaches the powder,
Practice and Training Grenades
which then explodes and shatters the paper body. A hand
grenade functions in the same reamer and consists of
Practice and training grenades (fig. 12-6) are used
the same principal parts: filler, body, and fuze assembly
for training personnel in the care, handling, and use of
(fig. 12-7).
The body is the container that holds the filler. It
grenades simulate functioning of service grenades to
provide realism in training. Training grenades are
may be made of metal, glass, cardboard, or other
completely inert and do not function in any way.
suitable material. It may `be circular, cylindrical, or
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