Manual

TO RELOAD THE RIFLE

1. Firing all cartridges in the magazine and the chamber will cause the bolt

carrier to automatically lock open. Keep the rifle pointed in a safe direction.

Put the safety in the “SAFE” position. Removal of the magazine can be

accomplished by pressing inward on the magazine catch with the thumb or

forefinger. The magazine will fall free of the rifle of its own weight. To avoid

the possibility of damage to the magazine, do not let it fall to the ground.

2. Insert a loaded magazine. WARNING: The bolt catch is held in place by friction

between the bolt face and the rear surface of the bolt catch. Therefore, when

there is a loaded magazine in place and the rifle is jarred, the bolt can release

and chamber a cartridge.

3. Release the bolt carrier to move forward by pushing in on the top pad of the

bolt catch. A cartridge will be chambered when the bolt carrier shuts.

WARNING: The rifle is ready for instant use once the bolt carrier moves

forward. If the rifle is not to be fired immediately, keep the safety on “SAFE.”

When you are ready to fire immediately, move the selector to the “FIRE”

position and resume firing, putting the safety back on “SAFE” whenever you

cease firing, even for a moment.

TO EXTRACT AND

EJECT A CHAMBERED CARTRIDGE

When the rifle is fired, the same gas pressure that drives the bullet forward acts

through the gas port to push the piston, transfer rod, and bolt carrier to the rear.

This action causes extraction and ejection of the fired cartridge case. If a

cartridge fails to fire or if the shooter wishes to eject the chambered cartridge

manually, follow the procedure “To Unload” step 3, p. 17. When the charging

handle is operated there can be a failure to extract the cartridge from the

chamber, or a failure to eject the cartridge clear of the rifle. These failures

usually are the result of the charging handle not being pulled rearward

vigorously. From the foregoing, it is clear that the user must:

1. Always visually check the chamber after opening the slide to eject a chambered

cartridge. If the charging handle is not vigorously retracted, the extracted

cartridge can be “ejected” into the magazine area.

2. Thoroughly clean the chamber and the extractor as often as necessary.

If an empty magazine is in the rifle when the charging handle is being retracted

to extract a cartridge, the cartridge may drop on top of the magazine or remain

held to the breech-face by the extractor. Then, when the bolt carrier goes

forward, the cartridge will be chambered again! REMEMBER -- always remove

the magazine before clearing the chamber, and visually check to ensure that no

cartridges remain in the gun.

TO REMOVE A BORE OBSTRUCTION

Rifles like the RUGER

SR-556

, which are chambered for small caliber,

high-velocity cartridges, are particularly susceptible to damage from firing when

the bore is obstructed. Excess oil, grease, or water may form an obstruction

which could cause damage and injury. If you suspect that your rifle may have

excess oil, grease or other contaminants in the barrel, or if it may have been