Weapons Familiarization

1
Weapons Familiarization

• M136 (M287) AT4
• Rocket Launcher
• Ref FM 3-23.25
• STP 21-1-SMCT

2
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

3
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)

4
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

5
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

6
Ammunition cont

• 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

7
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

8
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

9
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

10
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

11
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
  launchers 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

12
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

13
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 AT4s
  HEAT cartridge
• M287 produces less
• Noise
• Backblast
• Overpressure