Instruction manual

13
OPERATION OF INTERNAL LOCK
Never rely upon any safety mechanism or mechanical device to justify unsafe or
careless handling of a firearm. When securing your pistol or to prevent
unauthorized access, you should completely unload the pistol and store it in a
gun safe or use the key-operated external locking device supplied with your
pistol. (See Page 6.) However, for added security, and to comply with certain
state and local laws, your RUGER
®
MARK III pistol is also equipped with
an internal lock. When actuated, this internal lock will secure the pistol’s
manual safety in the "on" or "safe" position.
Before activating the internal lock on your pistol, first visually inspect the
chamber and magazine to verify that they are empty and do not contain any
cartridges.
To activate the internal lock, place the manual safety in the "on" or "safe"
position. (Note that the pistol must be cocked to engage the safety.) Next, place
the internal lock key (supplied with your pistol) into the internal lock keyway.
(See “Nomenclature,” p. 10.) Rotate the key fully clockwise (about 1 3/4 of a
rotation from the fully unlocked position) until it stops. (See Figure 3.) Remove
the key and verify that the internal lock engaged by attempting to move the
safety to the "off" or "fire" position. If the internal lock is engaged, you will not
be able to move the safety to the "off" or "fire" position.
To deactivate the internal lock, place the internal lock key into the internal lock
keyway (see “Nomenclature,” p. 10) and rotate the key counter-clockwise (about
1 3/4 turns from the fully locked position) until it stops. (See Figure 3.)
Be sure to store the internal lock key in a secure location, away from children
and careless adults. Do not store your firearm with the key in the internal lock
keyway. Never lock a loaded gun – always unload the gun before locking.
OPERATION OF INTERNAL LOCK
Figure 3
Place Manual
Safety “On”
Before Locking