Heckler&Koch MR556A1 User Manual
Page 11
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SECTION 6 — INSTRUCTIONS FOR USE
LOADING A MAGAZINE
Magazines may be loaded by hand, one round at a time, or quickly loaded using a
magazine filler and stripper clips. The use of a magazine filler and stripper clips is
depicted below (Fig. 15).
Filling the magazine
1. Hold the magazine with one hand. Place the cartridges onto the follower between the
magazine lips and push the cartridge, with your thumb, down underneath the lips and
ensuring the projectile is facing the front of the magazine and that the cartridge rim is
fully to the rear of the magazine.
2. Repeat this step until the magazine is filled with the appropriate number of cartridges
(20 or less for a 20-round magazine and 30 or less for 30-round magazines). Do not
overfill magazines.
Single rounds
Magazines may be loaded with one round at a time by inserting the cartridge case in
while depressing the follower and seating the case in until the projectile clears the front of
the magazine. Continue this each time until the magazine is full. During and when finished
filling the magazine gently tap the back of the magazine against the palm of your hand to
ensure the rounds are seated properly.
CAUTION: Ensure cartridges, especially those to be loaded into the magazine, are
free of sand, mud, moisture, frost, snow, ice, grease, or other foreign matter.
Using a Magazine Filler
10-round stripper clip
The magazine may be loaded quickly using the 10-round stripper clips and the stripper
clip guide that is provided with each bandoleer of ammunition.
Fig. 28 – Loading Magazine
1. Attach the magazine filler to the top rear of the magazine and insert a 10-round stripper
clip into the magazine filler (Fig. 28).
2. Using thumb pressure on the rear of the top cartridge, press down firmly until all 10
rounds are below the feeder lips of the magazine.
3. Remove the empty stripper clip while holding the magazine filler in place.
4. Repeat steps “1” through “3” until magazine is loaded. Remove magazine filler and
retain for future use.
CAUTION: It is possible to improperly load the cartridges if the guide is not
positioned correctly, the rim of the cartridge could possibly get caught in the rear
groove. Constantly check spring tension in between stripper clips. Unload magazine
if in doubt. Replace the stripper clip guides regularly as they wear with use.
WARNING: If the rifle is dropped or jarred with a loaded magazine in place and the
bolt to the rear, it could chamber a round. Failure to follow this warning may cause
injury or death.
Emptying the magazine
Hold the magazine with one hand. Push the cartridges forward out of the magazine with
the thumb of the other hand. Do not allow the cartridges to drop on a hard surface or they
may become damaged. Do not unload cartridges using another cartridge, damage to the
cartridge or injury to the operator may occur.
NOTE: The magazine may be loaded into the weapon with the bolt assembly open or
closed. The procedure listed below is for the bolt open.
LOADING
Loading the MR556A1 rifle for firing
1. Place the selector lever in the SAFE position. Point the muzzle in a safe direction with
the trigger finger off the trigger and outside the trigger guard.
2. Pull the charging handle rearward to open the bolt and lock it to the rear (Fig. 29).
Fig. 29
3. Check the chamber to ensure it is clear.
4. Insert a loaded magazine into the magazine well until the magazine catch engages the
magazine (Fig. 30).
5. Tap upward on the magazine to ensure it is properly seated and tug slightly
downwards on the magazine to verify it is properly engaged by the magazine catch.