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071-311-2130 (SL1) - Engage Targets with an M203 Grenade Launcher

Standards: Destroyed or disabled enemy targets without causing injury or death to friendly personnel.

Conditions: Given a zeroed M203 grenade launcher mounted on an M16-series or M4-series rifle, enemy targets located within engagement ranges, and sufficient ammunition.

Standards: Destroyed or disabled enemy targets without causing injury or death to friendly personnel.

Performance Steps

Note. This task may be performed using either of two sights found on the system.

WARNING: Keep muzzle pointed downrange and clear of all friendly troops.

1.   Keep the safety in the SAFE position until ready to fire.

2.   Load the M203 grenade launcher (Task 071-311-2127).

WARNING: Fire high-explosive (HE) grenades at targets within 130 meters (427 feet) (minimum safe) only from a protected position. When training (minimum safe), do not fire at targets within 130 meters (427 feet). In combat, do not fire at targets closer than 31 meters (102 feet).

3.   Determine range to target (figure 071-311-2130-1).


Figure 071-311-2130-1. Range estimation

 

4.   Determine if target is engageable.

5.   Determine if target should be engaged.

6.   Select the appropriate firing technique based on target range (figure 071-311-2130-2).


Figure 071-311-2130-2. Firing techniques

 

a. For short-range targets at 50 meters or less, place the leaf sight down and use the rifle sights (A, figure 071-311-2130-2).

Note. Estimate distance to target and aim head high on the target.

b. For targets from 50 to 250 meters, raise the leaf sight and use with the rifle front sight (B, figure 071-311-2130-2).

c. For targets from 250 to 400 meters, use the front and rear sight of the quadrant sight only (C, figure 071-311-2130-2).

7.   Select and assume an appropriate firing position (figure 071-311-2130-3).


Figure 071-311-2130-3. Firing positions

 

Note. Launcher may be fired from the standing, kneeling, or prone position.

a. Place the stock of the weapon on the ground when firing long range from the prone position.

b. Hold the stock firmly against your shoulder for all other positions.

8.   Obtain sight picture (using leaf sight or quadrant sight).

Note. Leaf sight may be used at ranges between 50 and 250 meters.  Quadrant sight ranges are from 50 to 400 meters.

9.   Adjust the leaf sight if necessary (figure 071-311-2130-4).


Figure 071-311-2130-4. Leaf sight

 

Notes.

1. For range, the leaf sight scale is marked in 50-meter (165-foot) increments for targets from 50 to 250 meters.

2. For elevation, one increment equals 10 meters (33 feet) at a 200-meter (660-foot) range.

3. For windage, one increment equals 1.5 meters (5 feet) at a 200-meter (660-foot) range.

a. For headwind and rear wind-

(1)  Loosen the elevation adjustment screw to move the leaf sight up to increase range for head wind.

(2)  Lower it to decrease range for rear wind.

(3)  Use the rim of a used 40-mm cartridge to turn the elevation adjustment screw.

b. For left wind and right wind-

(1)  Turn the windage adjustment screw clockwise to adjust for wind from the left.

(2)  Turn the windage adjustment screw counterclockwise to adjust for wind from the right.

10. Adjust the quadrant sight if necessary (figure 071-311-2130-5).


Figure 071-311-2130-5. Quadrant sight

Note. Range quadrant is marked in 25-meter (83-foot) increments from 50 to 400 meters (165 to 1,320 feet).

a. Pull the latch toward you to release the quadrant sight arm.

b. Select elevation.

Note.  For elevation adjustment, one notch equals 5 meters (17 feet) at a 200-meter (660-foot) range.

c. For head wind and rear wind-

(1)  Turn the front sight post left to increase range for head wind.

(2)  Turn the front sight post  right to decrease range for rear wind.

d. For left wind and right wind:

(1)  Depress the retainer and slide the rear aperture in to adjust for wind from the right.

(2)  Slide the rear aperture out to adjust for wind from the left.

Note. The vertical line marks the center. One notch equals 1.5 meters (5 feet) at a 200-meter (660-foot) range.

11. Move safety to the FIRE position.

WARNING: Be sure there are no obstacles (such as the sling or branches) in the line of fire.

12. Aim and squeeze the trigger to fire.

Note.  Practice breath control when firing the rifle.

13. If the first round misses, adjust fire as necessary by sensing the impact of the round and manipulating the sight.

Note.  Continue the adjustment process until a hit is obtained or the area has been covered by fire.

a. If time allows, whether using the AN/PVS-4 or AN/PVS-7, adjust the sights, but if time is critical, adjust the point of aim instead.

b. If the grenade lands more than 25 meters over or short of the target, adjust the range quadrant to bring the next grenade on target.

c. If the grenade explodes less than 25 meters from the target, adjust the point of aim to bring the next grenade on target.

d. If the launcher is properly zeroed, deviation errors will be small and you can easily correct them by adjusting the aiming point. Adjust for wind as described in steps 9 and 10.

Evaluation Preparation: 

Setup: At a live-fire M203 range, provide all the materials indicated in the task conditions.

Brief Soldier: Tell the soldier to engage targets in his sector of fire at ranges from 50 to 250 meters.

Performance Measures

GO

NO GO

1.   Kept the safety in the SAFE position until ready to fire.

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2.   Loaded the M203 grenade launcher.

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3.   Determined range to target.

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4.   Selected the appropriate firing technique based on target range.

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5.   Selected firing position.

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6.   Adjusted the leaf sight.

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7.   Adjusted the quadrant sight.

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8.   Moved safety to the FIRE position.

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9.   Aimed and squeezed the trigger to fire.

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10. Adjusted fire by sensing the impact of the round and manipulating the sight.

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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.

References

 

Required

Related

 

 

FM 23-31

 

 

TM 9-1010-221-10