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Weapons Familiarization. M136 (M287) AT4 Rocket Launcher Ref: FM 3-23.25 STP 21-1-SMCT . Description. Lightweight Self-contained Anti-armor weapon Free-flight Fin-stabilized Rocket-type cartridge Man-portable Fire from right shoulder only Employed in limited visibility.

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Weapons familiarization l.jpg

Weapons Familiarization

M136 (M287) AT4

Rocket Launcher

Ref: FM 3-23.25

STP 21-1-SMCT


Description l.jpg
Description

  • Lightweight

  • Self-contained

  • Anti-armor weapon

  • Free-flight

  • Fin-stabilized

  • Rocket-type cartridge

  • Man-portable

  • Fire from right shoulder only

  • Employed in limited visibility


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Technical Data

  • Launcher

    • Length 40 inches

    • Weight 14.8 pounds

  • Rocket

    • Caliber 84mm

    • Length 18 inches

    • Weight 4 pounds

  • Maximum Range

    • 2,100m (6,890 ft)

  • Maximum Effective Range

    • 300m (985 ft)


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Components

  • Fire-through muzzle cover

  • Front sight

  • Color-coded band

  • Forward safety

  • Rear sight

  • Red trigger button

  • Cocking lever

  • Shoulder stop

  • Transport safety pin

  • Rear seal

  • Venturi (inside)

  • Carrying sling


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Ammunition

  • Round ammo

  • Integral rocket type cartridge

  • Cartridge consist of:

    • Fin assembly with tracer element

    • Point-initiating

    • Base-detonating

    • Piezoelectric fuse

    • Warhead body with liner

    • Precision shaped explosive charge


Ammunition cont l.jpg

Excellent penetration ability

Lethal after-armor effects

Extremely destructive

Penetrates more than 14 inches of armor

Color-coding:

Black with yellow – HE anti-armor round

Gold or yellow – field handling trainer

No band – M287 9mm tracer bullet trainer

Ammunition cont’


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Inspection

  • M136 is issued as a round of ammunition rather than as a weapon

  • Should be inspected at the time of issue and before use


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Inspection cont’

  • Rear seal is in place and undamaged

  • Transport safety pin is in place and fully inserted

  • Cocking lever is present and in the SAFE position

  • Plastic fire-through muzzle cover is in place and undamaged

  • Launcher has the correct color-coded band

  • Sights function properly

  • Forward safety does not move when you depress it

  • Red trigger button is not missing

  • Launcher body has no cracks, dents, or bulges

  • Carrying sling is not frayed and is attached firmly to the launch tube

  • Shoulder stop is not broken or damaged, and it unsnaps and folds down


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Operation and Function

  • Mechanism is mechanical

  • Consist of:

    • Red trigger button

    • Enclosed firing rod and spring

    • Three safety devices

      • Transport safety pin

      • Cocking lever

      • Forward safety


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Operation and Function cont’

  • The weapon cannot be fired until all three safeties have been disengaged

    • Transport safety pin – blocks the firing pin from striking the cartridge percussion cap

    • Cocking lever – attached to the firing rod, is in the SAFE position, the firing rod and the trigger cannot touch

    • Forward safety – blocks the firing rod from striking the firing pin


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Operation and Function cont’

  • Remove AT4 from its carrying position and cradle it in your left arm

  • Pull and release the transport safety pin

  • Unsnap, unfold, and hold the shoulder stop

  • Place the launcher on your right shoulder and stabilized it by grasping the sling near the launcher’s muzzle

  • Open the sights

  • Set rear sight for the correct range to the target

  • Check back-blast area before cock the launcher, unfold the cocking lever

  • Hold the forward safety down while you fire


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Restoration to Carrying Configuration

  • If the launcher is prepared to fire, but then is not fire:

    • Release the forward safety

    • Push forward and to left on the cocking lever

    • Move the launcher from shoulder, ensuring muzzle is pointed in the direction of fire

    • With the launcher cradled, replace the transport safety pin until it is fully seated in the retainer hole

    • Lay down the sights and close their covers

    • Snap the shoulder stop into the closed position

    • Sling the launcher and move to another location


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AT4 Subcaliber Tracer Trainer

  • M287 is used in place on the AT4 in training

  • Uses the 9mm (M939) training practice tracer cartridge

  • The velocity and trajectory match that the AT4’s HEAT cartridge

  • M287 produces less:

    • Noise

    • Backblast

    • Overpressure


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