10/22 Manual - Ruger

ATTACHING SCOPE BASE ADAPTER
To attach Scope Base Adapter to rifle receiver:
1. Retract bolt handle, lock bolt open and push safety to “on” position. Be sure
gun is completely empty.
2. Unscrew the four filler (headless) screws from the receiver. These screws may
be quite tight.
3. Position adapter on receiver and place a base-mounting screw in each hole of
the adapter. Turn each screw until it just catches the threads in the receiver
hole, but don’t tighten the screws at this point.
4. Starting at the first screw, turn each screw part way in; then move to the next
screw, repeating the procedure until all four screws are snugly tightened.
5. Release the bolt handle; then retract it several times, permitting it to snap
forward. If the bolt seems to bind, determine which screw is binding the top of
the bolt. If it is necessary to shorten a screw, be certain to chamfer its top so it
does not cross thread the hole in the receiver.
6. Attach scope bases and scope to the adapter in accordance with their
instructions.
Scope mounting precautions: Do not remove the scope base filler screws (there
are four in the receiver) unless the supplied scope base adapter or other suitable
base is to be mounted with properly fitting screws. Do not deepen or alter the
screw holes that are in the Ruger 10/22. Do not place any sealant into the screw
holes in the receiver, as the sealant can drip into the bolt or receiver and cause
potentially dangerous malfunctions.
Tip-Off Style
Scope Base Adapter
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