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071-054-0001 (SL1) - Prepare an M136 Launcher for Firing

Standards: Performed prefire checks on the M136 AT4 and prepared the round for firing.

Conditions: Given an M136 launcher (AT4) and a requirement to prepare it for firing.

Standards: Performed prefire checks on the M136 AT4 and prepared the round for firing.

Performance Steps

Note. Because the M136 launcher is issued as a round of ammunition rather than as a weapon, the launcher is completely used; therefore, inspection is limited to visual examination of the external components.

1.   Perform the prefire checks. The overall condition of the launcher should be inspected before it is used (figure 071-054-0001-1). The firer should ensure-

a. The transport safety pin is in place and fully seated and the lanyard is attached.

b. The cocking lever is in the SAFE position and folded down.

c. The fire-through muzzle cover is intact. If the seal is torn, it should be removed to ensure that no foreign objects have gotten into the launcher.

d. The launcher's color-coded band is the correct color: black for high-explosive antitank, gold for target-practice tracers, and blue for field-handling trainers.

e. The sights function properly. Open the sight covers to ensure the sights pop up and are not damaged.

f.  The red safety catch does not move when depressed.

g. The rear seal is not damaged.

h. The shoulder stop is not broken or damaged and it unsnaps and folds down.

i.   The carrying sling is not frayed and is attached to the launcher.

j.   The launcher body has no cracks, dents, or bulges.

Figure 071-054-0001-1. Parts of the M136 launcher to be inspected


2.   Prepare the launcher for firing. Preparation procedures are-

a. Remove the launcher from the carrying position and cradle it with the left arm (figure 071-054-0001-2).

Figure 071-054-0001-2. Cradle position


b. While cradling the launcher, pull the transport safety pin with the right hand and release it (figure 071-054-0001-3).

Figure 071-054-0001- 3. Removing the transport safety pin


Note. Ensure the transport safety pin is attached to the launcher by its lanyard.
If the launcher has no lanyard, place the transport safety pin in your pocket.
If the launcher remains unfired, reinsert the transport safety pin.


Make sure personnel wear earplugs.

Point the weapon toward the target.

Clear the back blast area.

c. Unsnap and unfold the shoulder stop (figure 071-054-0001-4).

Figure 071-054-0001-4. Unsnapping the shoulder stop


d. With the shoulder stop in position, place the launcher on the right shoulder.

e. With the launcher on the right shoulder and supported with the left hand, release the front sight by pressing down on the sight cover and sliding it to the rear. Release the rear sight by pressing down on the cover and sliding it forward. Sliding the covers off allows the sights to pop up.

f.  Check the backblast area.

g. Cock the launcher by unfolding the cocking lever with the right hand. Place the thumb of the right hand under the cocking lever. Grip the front of the firing mechanism for support. Push the cocking lever forward to the right. Let the cocking lever slide back (figure 071-054-0001-5).

Figure 071-054-0001-5. Cocking the launcher


h. Adjust the rear sight for the required range.

(1)  When closing the sight cover, set the sight on a range of 200 meters. When the rear sight is uncovered, the battlesight setting is 200 meters. If the range to the target is more than 200 meters but less than 250 meters, no sight adjustment is required (figure 071-054-0001-6).

Figure 071-054-0001-6. Adjusting the rear sight


(2)  To adjust the rear sight range setting to more than 200 meters, turn the range knob clockwise (toward the muzzle). To decrease the range, turn the range knob counterclockwise (toward the gunner). There is a click at each 50-meter increment; this sound aids you during limited visibility (figure 071-054-0001-6).

Evaluation Preparation: 

Setup: At the test site, provide an expended AT4 or a tracer trainer in the carrying configuration; have the soldier place it in the carrying position. Tell the soldier the range to the target. Ask the soldier when the rear sight requires adjustment.

Brief Soldier: Tell the soldier to prepare the launcher to fire. Tell the soldier he will be required to answer questions about the launcher.

Performance Measures



1.   Performed the prefire checks.



a. Checked the transport safety pin.



b. Ensured the cocking lever was on SAFE.



c. Checked the fire-through muzzle cover.



d. Checked the color-coded band.



e. Checked the front and rear sights.



f.  Checked the red safety catch.



g. Checked the rear seal.



h. Checked the shoulder stop.



i.   Checked the carrying sling.



j.   Checked the body of the launcher.



2.   Prepared the launcher for firing.



a. Removed the transport safety pin.



b. Unsnapped and unfolded the shoulder stop.



c. Placed the launcher on the right shoulder.



d. Released the front and rear sights.



e. Checked the back-blast area.



f.  Cocked the launcher.



g. Adjusted the rear sight.



Evaluation Guidance:  Score the soldier GO if all performance measures are passed. Score the soldier NO GO if any performance measure is failed. If the soldier scores NO GO, show him what was done wrong and how to do it correctly.







FM 3-23.25