Table 2-1.--Range Data
You should load only one cartridge into the rifle at a
time, and should not load it until you are at the rail, just
before firing, with the rifle pointing outboard in a safe
M14 RIFLE
direction. Never use any cartridge other than one
designated to fire a line-throwing projectile.
Range
Degrees of Elevation
SHOT LINE
80 yards
60
The nylon shot line comes in spools (fig. 2-39). The
90 yards
45
line is approximately 550 feet long and has a tensile
strength of 125 pounds. It is wound around a wooden
spindle in a way that prevents the line from fouling
85 yards
30
when the projectile is fired. The line is colored
international orange and is treated with a water-
55 yards
0
repellent solution to make it buoyant enough to float on
the surface for at least 24 hours.
NOTE: 0 (degrees) is when the rifle is parallel to the
surface.
PREPARATION FOR FIRING
On the M14 rifle, the spindle valve must be in the
If you experience a misfire or hangfire, wait 10
CLOSED (slot parallel to the barrel) position (See
seconds before you eject the grenade cartridge. Report
figure 2-37.) before the line-throwing projectile is
the malfunction according to OPNAVINST 5102.1.
fired.
The maximum reliable range of the line-throwing
projectile is approximately 90 yards when fired from
NOTE
the M14 rifle. This range depends upon having a dry
This position of the spindle valve is
shot line. You can use a wet line if a dry line is not
described as being in the OFF (horizontal)
available, but it will reduce the range. Table 2-1
position in the first part of this chapter and in
provides the approximate range data for firing from the
the TM9-1005-223-10.
M14 rifle.
FIRING
MAINTENANCE
Before you fire the line-throwing projectile from
the M14 rifle, elevate and aim the rifle over and across
Maintenance and operation of the Mk 87 Mod 1
the designated target. Although the projectile is made of
line-throwing rifle adapter kit is covered in NAVSEA
rubber, it has enough velocity to cause injury. Keep the
SW350-A1-MMO-010. Kit maintenance is also
rifle elevated until the projectile reaches its target to
covered by a 3-M Systems MRC.
prevent line entanglement.
MACHINE GUNS
The Navy currently uses the Browning .50-caliber
machine gun and the 7.62-MM M60 machine gun. We
discuss both of these weapons below.
THE .50-CALIBER BROWNING
MACHINE GUN
Browning machine guns (abbreviated BMGs) are
Figure 2-39.--Shot line.
standard Army weapons used by the Navy. The .50-cal.
BMG now used by the Navy and the Army is the M2.
2-20