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French
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MAS
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French Rifles
MAS
49/56 Service Manual (continued)
by
Melburn Park (mpark@nb.utmem.edu)
2.1.7. Firing
-- Disengage the safety.
-- Maintain aim while pushing gradually on the (two stage) trigger until
the round is discharged.
-- Reengage the safety.
2.1.8. Unloading
-- Unfeed (cf. 2.1.2.).
-- Cycle the action to eject the chambered round (cf. 2.1.3.).
2.1.9. Disarming
-- Assure that the chamber is empty and the chamber contains no rounds.
-- Depress the trigger as in firing the weapon.
2.2 FIRING RIFLE GRENADES (Rifle-Launched Grenades)
Fire is done with magazine removed and the gas-port cock (valve) closed.
Ammunition is the special launching cartridge, 7.5 mm, without projectile.
Grenades are fired in either vertical (high-trajectory) fire (antipersonnel
grenades), or in shoulder held fire (antitank and antipersonnel grenades).
2.2.1 Vertical grenade fire
Two preliminary operations are necessary,
-- raise the sighting bar to the proper angle (74 degrees for range
of fire between 100 and 200 meters, 45 degrees for ranges between
200 and 400 meters).
-- adjust the sliding ring to the position appropriate for the range.
2.2.1.1. Adjustment of the sighting bar
Grip the stowed bar between thumb and index finger and pull it slightly
toward the rear to release it from its detent and pivot it until it locks
-- in the first locking notch if the angle to be used is 45 degrees
-- in the second notch if the angle to be used is 74 degrees
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2.2.1.2. Adjustment of the sliding ring
Depress the locking button and move the sliding ring (N, fig. 16) along
the barrel until the graduation marking corresponding to the range appears
beneath the rear edge of the ring.
Release the button and assure that the ring has locked.
2.2.1.3. Vertical (high-trajectory) grenade launch
-- Raise the gas port cock (H. fig. 16)
-- Engage the sighing bar at 45 or 74 degrees, according to range to be fired
(74 degees for ranges of 100 to 200 meters, 45 degrees for ranges of 200 to
400 meters).
-- Put the sliding ring on the graduation corresponding to the firing distance
(read the graduation directly for 74 degree angled fire, and mentally
multiply the rifle graduation by 2 in the case of 45 degree angled fire).
Example.
For a target estimated to be at 175 meters, engage the sighting bar in the
74 degree notch; put the sliding ring on the 18 mark.
For a target estimated to be at 300 meters, engage the sighting bar in the
45 degree notch; put the sliding ring on the 15 mark (15 x 2 = 30).
-- Position the grenade on the barrel until it abuts against the resistance of
the sliding ring (fig. 9).
Fig. 9. -- High-trajectory fire of a rifle grenade with the sighting bar
at 45¡.
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-- Place a special grenade-launch cartridge in the chamber and close the
breech.
-- Aim the weapon by sighting along the auxilliary sights on the sighting bar.
-- Operate the trigger while maintaining the weapon in the aimed position.
2.2.2. Held grenade fire
-- Close (by raising) the gas port cock
-- Lock the sighting bar to 74 degrees.
-- Verify that the sliding ring is returned completely to the rear
-- Position the base of the grenade over the barrel so that it is fully
engaged.
-- Place a special grenade-launch cartridge in the chamber and close the
breech.
Fig. 10. -- Shoulder-held fire of a rifle grenade with the sight bar at 74¡
Fig. 11. -- Sight picture for shoulder-held grenade fire at a range of 75
meters.
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-- Aim the weapon by aligning the target with a straight line passing through
the tip of the sight corresponding to the range (50, 75, or 100 meters for
antiarmor grenades, 120 meters for antipersonnel grenades) and the top
edge of the body (head) of the grenade.
-- Operate the trigger while maintaining the weapon in the aimed position.
2.3. USE OF THE NIGHT SIGHT APPARTUS (fig. 7).
2.3.1. Attach the apparatus.
Move the grenade-launch sliding ring (N, fig. 16) completely to the rear.
Insert the night sight apparatus fully onto the barrel, being sure that
the spring on its is completely engaged.
Rotate so that the sights are oriented vertically.
Strongly tighten the wing nut.
2.3.2. Calibration of the apparatus
In daylight, place the rifle, with night sight apparatus affixed, on a
bench rest.
Aim the rifle at a target placed 50 meters downrange using the normal
sights.
Direct the aimpoint of the night sight apparatus without touching the rifle
itself, employing only the adjustments provided on the front and rear sights
(cf. 1.1.3.1.5.).
2.3.3. Aiming using the night sight apparatus
Direct the line of sight made by the single flourescent dot of the front
sight and the two dots of the rear sight toward the target.
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2.4 FIRE USING THE TELESCOPIC SIGHT, MODEL, model 1953 (fig. 12).
Cf. Manual 1853, Technical Guide for the Telescopic Sight, Model 1953.
Fig. 12 -- Telescopic Sight, Model 1953.
2.5. USE OF THE BAYONET KNIFE
2.5.1. Fixing to the weapon
Hold the bayonet-knife vertically, beneath the barrel. Place the lower
coller in the sliding ring, which must be in its rear-most postion, then pull
the bayonet-knife back until it locks in place.
2.5.2. Removal
Depress the latch and pull the bayonet-knife strongly upward.
2.6. BLANK FIRE
Fit a blank fire adapter [stop] to the muzzel.
Use the white plastic cartridges, 7.5 mm., model 1958.
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3. PROBLEMS
In case of a problem during fire, empty the rifle (cf. 2.1.2.), cock the
action (fc. 2.1.3.), and engage the safety (cf. 2.1.5.), and examine the
chamber and cartridge or case.
If the slide has returned to battery, wait two minutes before opening the
breech, in order to avoid the consequences of a hang fire.
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Observations Possible Cause Remedy
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Normally ignited cartridge Defective Ammunition Change the Ammunition
remains in chamber
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Cartridge not ignited or Firing pin worn or Replace the firing pin
weekly ignited remains in broken.
chamber Failure to chamber
-- weapon is dirty Clean the weapon
-- foreign body Remove foreign body
Firing pin groove worn Return the weapon for
out of round. repair
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No extraction Extractor worn Replace extractor
Dirty chamber Clean the chamber
Broken case
Incomplete extraction, Insufficient bolt recoil Verify that the bullet is
case remains in the due to insufficient pro- not lodged in the
breech pulsion from the powder barrel.
charge (humidity) Change the ammunition lot
being used.
If the problem persists,
place the weapon in
repair.
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Cartridge slows in Weapon is dirty Clean the weapon
feeding Magazine is deformed Replace the magazine
Cartridge is dented Remove the cartridge
or corroded
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Cartridge not introduced The magazine lips are Replace the magazine
straight into the chamber bent
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Misfire Defective cartridge Verify that bullet is not
lodged in the barrel.
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ObservationsPossible CauseRemedy
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Gas escapes from the Case rupture Remove the case and bring
chamber. it to the armorer.
Rapid (full-auto) Premature hammer Place the weapon in
fire release repair
Grenades not held in Loss of the detent Install a new grenade
place spring detent spring
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