Manual

8
FIREARMS ARE DANGEROUS WEAPONS–
READ THE INSTRUCTIONS AND WARNINGS
IN THIS MANUAL THOROUGHLY AND
CAREFULLY BEFORE USING.
GENERAL INFORMATION
AND MECHANICAL CHARACTERISTICS
The RUGER
®
SR-556
TM
Rifle is a gas-operated, piston-driven, box magazine
fed, autoloading rifle. It is simple, reliable, and consists of relatively few
components. The mechanism employs the Ruger short stroke piston system in
conjunction with a rotating bolt. The SR-556
TM
Rifle can be field stripped for
cleaning to its basic subassemblies in seconds without the use of tools.
The safety, located above the trigger on the left side of the lower receiver, blocks
the trigger and permits the bolt carrier to be cycled with the safety in the on or
“SAFE” position. A bolt catch mechanism is provided for convenience in holding
the bolt open for loading and inspection. The firing pin is retracted mechanically
as the bolt starts to unlock and the rifle will fire only when the bolt is locked.
WARNING–ALTERATIONS
This product was designed to
function properly in its original
condition. Alterations can make it
unsafe. Do not alter any part or add
or substitute parts or accessories
not made by Sturm, Ruger & Co. Inc.
DO NOT ALTER ANY GUN
WARNINGS OF GREAT IMPORTANCE ARE
FOUND ON THE FOLLOWING PAGES:
Locking Devices 5 Unloading 16
Alterations 8 Bore Obstructions 19
Manual Safety 10 Malfunctions 22
Ammunition 11 Disassembly 23
Lead Exposure 12 Lubrication 29
Firing 14 Storage 30
Handling 15 Shipping 33
Sustained Firing 16 Parts Purchasers 34
OTHER CAUTIONS AND WARNINGS APPEAR
THROUGHOUT THE MANUAL.