SB 742-1
The M939 is marked with a red tip and one-half black base.
The M939 cartridge will be inspected per the appropriate
LAUNCHER AND CARTRIDGE, 84MM, HE M136
sections of this supply bulletin. The M287 trainer is
(AT4)
considered a weapon, not ammunition (FSC 6920).
i. Stock number of expended launcher is 1315-01-273-
9352.
a. FSC: 1315.
Launcher and Cartridge, 84mm, M-2. Unique safety precautions.
b. Ammunition Type:
HE: M136 (AT4).
The M136 (AT4) weapon system is a preloaded recoilless gun
equivalent to a propulsive high explosive rocket. Due to the
c. The M136 (AT4) is a fully self contained, lightweight,
propulsive state of the M136 weapon system, orientation of
man-portable, right shoulder fired anti-armor weapon. The
muzzle (nose end) during handling, transport and storage will
M136 consists of a free-flight fin stabilized projectile packaged
be according to the procedures established for propulsive state
and sealed in an expendable launcher. The launcher serves as
rockets.
a transport and storage container. It is issued as a complete
round of ammunition.
d. Firing is mechanical. The rearward motion of the firing
rod strikes a pin and initiates the percussion cap; the firing None identified at this time.
train is relayed to the propellant charge. The propellant charge M-4. Inspection category and sampling plan.
is completely burned prior to the departure of the projectile
a. Inspection category X. Periodic inspection interval 4
from the launch tube.
years.
e. The weapon's projectile is a ballistic trajectory fin
b. Sampling plan will be according to chapter 2.
stabilized Octol (HMX/TNT) shaped charge. The base fuze
incorporates an out of line rotor which aligns the detonator
c. No storage monitoring inspection is required.
with the explosive train 15-25 meters from the muzzle after
firing. The Piezoelectric crystal generates voltage to initiate M-5. Specific inspection points.
explosive train upon impact at angles as slight as 10 degrees.
Item will be inspected according to chapter 2 and table M-1.
f. The launch tube is a glass-fiber reinforced plastic 84- Item is packed in a transparent barrier material and will not
mm smoothbore full caliber barrel. Tube consists of a rear normally be opened for purposes of inspection.
aluminum venturi, fire-through muzzle cover, firing
NOTE
mechanism, fixed front and adjustable rear sight assemblies,
face pad, shoulder stop and carrying sling.
Inspector must verify that the serial number on the round
g. The projectile is factory pressed and cemented into a matches that on the outer pack. Annotate serial numbers,
cartridge assembly consisting of an aluminum case, base plate, findings and any discrepancies to the DSR card; report any
365 grams of double base propellant, percussion primer and discrepancies
to
the
local
accountable
officer.
igniter. The cartridge is factory loaded into launch tube.
h. The M287 9mm subcaliber training weapon provides
M136 weapon system familiarization and training. The M287
is similar in function and appearance to the M136 tactical
system except for a gold colored band (indicating trainer), lack
of muzzle cover, and presence of a 9mm barrel and bolt
assembly in rear venturi (in lieu of projectile and cartridge
assembly). The M287 utilizes the M939 9mm tracer cartridges
(1305-A358) to simulate the ballistic trajectory of the tactical
round.
Classification
Application
Inspection
Inspection
Method
Description
1. Critical:
a. Transport safety pin missing or ineffective
Visual/Manual
b. Cocking lever in cocked (not safe) position, broken or
Visual/Manual
missing
c. Muzzle cover ruptured with obstruction (cover or foreign
Visual
material) in bore of launch tube
d. Launch tube perforated, broken, cracked, crazed, dented,
Visual
bent, gouged or white plastic visible
2. Major:
a. Sight covers or sight assemblies damaged or missing
Visual/Manual
b. Markings or warning labels missing, illegible or incorrect
Visual
c. Any part of weapon missing, damaged, or inoperative
Visual/Manual
(except as otherwise noted)
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