FM 23-45 Basic Field Manual
2
F
IGURE 1.—Browning machine gun, M1919A4
■3. FEED BELT. — Woven fabric belts of a capacity of 150 rounds, equipped with
brass strips at each end to facilitate loading, are normally used with the ground light
machine gun.
■4. MOUNTINGS.
a
. The ground light machine gun normally is mounted on the light machine gun
tripod M2, a description of which is given in section VI.
b
. In motorized or mechanized units, the light machine gun is mounted on vehicular
mounts of several types, but a light machine gun tripod M2 is usually carried for each
gun to be used when the gun is fired from the ground.
■5. GENERAL DATA. — General data for the light machine gun and mount are as
follows:
■6. SIGHTS.
a. Front
. — The front sight consists of a front sight blade, a front side body, a front
sight post, and a plunger mechanism. The front sight post pivots on the front sight
bearing screw when folded for convenience in packing. The plunger mechanism
provides a locking device to keep the front sight post in its upright position when the
gun is being fired. The front sight is attached to the front end of the receiver by means
of a screw. The height of the front sight is such that when the rear sight slide is set at
an elevation a bullet fired from the gun will strike a target at a distance corresponding
to the elevation set on the rear sight.
b. Rear
. —
(1) The rear sight (fig. 2) is of conventional type. It consists of a rear sight leaf,
carrying a peep in the slide mounting, pivoted on the rear sight base, and adjustable
for windage. The rear sight base mounts the rear sight leaf and rear sight leaf spring.
It is secured to the left side plate of the receiver by three screws in the flange of the
base.
(2) The rear sight leaf is graduated for elevation in 100yard divisions up to 2,400
yards. The peep of the rear sight slide is 0.081 inch in diameter. Motion of the rear
sight slide is accomplished by rotation of the elevating screw knob.
