M2/M3 BRADLEY FIGHTING VEHICLE: TURRET - OD1609 LESSON 1/TASK 1
(4) Vane Sight.
The commander uses the vane sight to quickly align the
turret with the target.
(5) Integrated Sight Unit (ISU).
The ISU has both day and night vision
sight relay for the commander and the gunner.
(6) Backup Sight. The backup sight is a mechanical sight used in the event
of an ISU failure.
It allows aimed daylight firing of the 25mm gun in AP or HE
mode.
(7) Coax Machinegun.
The coax machinegun uses 7.62mm ammo.
It
is
lightweight, gas operated, and air cooled, and is fed by a metallic link belt.
(8) Smoke Grenade Launcher. Two electrically-fired smoke grenade launchers
are located on the turret, one on the right front and one on the left front. Each
launcher fires four smoke grenades.
(9) 25mm Gun.
The 25mm gun is an electrically powered, chain driven
weapon.
It is controlled for single shot, low and high automatic rates of fire,
and is fed by a metallic link belt.
(10) Gunner's Controls. Gunner's controls include control handles, levers,
and handwheels.
They are for either manual or power operation of the turret and
weapons. Control boxes, indicator lights, slope indicators, elevation indicators,
azimuth indicators, and a floor switch are used.
(11) Commander's Controls. The commander's controls consist of a weapon and
turret override control handle, a relay sight eyepiece, and periscopes.
Also
included are slope indicators, elevation indicators, azimuth indicators, intercom
system, and turret and weapon control boxes.
(12) Annunciator Light System.
The annunciator light system is a built-in
warning light system for the turret. Annunciator lights are located on the turret
control box, TOW control box, and annunciator box. The lights indicate something
is wrong in the turret.
(13) TOW Launcher.
The TOW launcher is located on the left side of the
turret. The launcher tube carries two TOW missiles.
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