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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.

2.   Loaded the M203 grenade launcher.

3.   Determined
range to target.

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

5.   Selected firing position.

6.   Adjusted the leaf sight.

7.   Adjusted the quadrant sight.

8.   Moved safety to the FIRE position.

9.   Aimed and squeezed the trigger to fire.

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

References


 

Required


Related


 

 

FM
23-31

 

 

TM
9-1010-221-10