1. Weapons Familiarization
M136 (M287) AT4
Rocket Launcher
Ref: FM
STP 21-1-SMCT

2. TASK
PREPARE AN M136 or M287
LAUNCHER FOR FIRING

3. CONDITIONS GIVEN AN M136 LAUNCHER (AT4) AND
A REQUIREMENT TO PREPARE IT FOR
FIRING

4. STANDARDS PREFORM PREFIRE CHECKS ON THE AT4 AND PREPARE THE ROUND FOR
FIRING

5. Description Lightweight Self-contained Anti-armor weapon (84mm)
Man-portable
Recoilless Rifle
Fire from right shoulder only
Employed in limited visibility
One time use & Disposable

6. Description (cont)
Night Vision Equipped

7. AT4-CS (Confined Space)
Reduced back blast area
Improves urban combat and maneuvering

8. Technical Data Launcher Rocket Length 40 inches Weight 14.8 pounds
Caliber 84mm
Length 18 inches
Weight 4 pounds

9. Range Of Fire Maximum Range : 2100 meters Maximum Effective Range
Moving Target : 150 meters
Stationary Target : 300 meters
Arming Distance : 10 meters
Combat Min Distance : 10 meters

10. Ammunition Integral rocket type cartridge
Time of flight:250m < 1sec
Cartridge consist of:
Fin assembly with tracer element
Base-detonating
Piezoelectric fuse
Warhead body with liner
Precision shaped explosive charge

11. 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

12. 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
Carrying sling

13. 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

14. 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

15. 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

16. 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

17. 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

18. 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

19. 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

20. ANY QUESTIONS ???