AT 4 Familiarization
Click here to download the presentation.
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
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)
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
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’
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
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
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
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
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
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
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
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
