*Shown with optional accessories not included.
Read the instructions and warnings in this manual carefully before using this firearm; do not discard this manual.
This instruction manual should always accompany this firearm and be transferred with it upon ownership, or when the firearm is loaned or presented to another person.
Reliability. First time, every time.TM
P556 TM
Pistol
Handling & Safety
InSTructions
For Product Service on this model, Please Call (603)772-2302
sig sauer, INC. • 18 Industrial Drive, Exeter, New Hampshire 03833 usa
OWNERS MANUAL
State-By-State Warnings
Certain states require, by law, that their own specified warning notices, in larger-than-normal type be conspicuously included by the manufacturer, distributor, or retail dealer with firearms sold in that state. SIG SAUER Inc. sells its products in compliance with applicable laws and regulations. Because
our products may be sold these states, we include the following:
CALIFORNIA:
WARNING
“Children are attracted to and can operate firearms that can cause severe injuries or death. Prevent child access by always keeping guns locked away and unloaded when not in use. If you keep a loaded firearm where a child obtains and improperly uses it, you may be fined or sent to prison.”
CONNECTICUT:
ADVERTENCIA
“A los niños atraen las armas de fuego y las pueden hacer funcionar. Ellos pueden causarse lesions graves y la muerte. Evite que los niños tengan accesso a las armas de fuego guardándolas siempre con llave y descargadas cuando no las esté utilizando. Si usted tiene una arma de fuego cargada en un lugar en que un niño tiene accesso a ella y la usa indebidamente, le pueden dar una multa o enviarlo a la carcel.”
“UNLAWFUL STORAGE OF A LOADED FIREARM MAY RESULT IN IMPRISONMENT OR FINE.”
FLORIDA:
“IT IS UNLAWFUL, AND PUNISHABLE BY IMPRISONMENT AND FINE, FOR ANY ADULT TO STORE OR LEAVE A FIREARM IN ANY PLACE WITHIN THE REACH OR EASY ACCESS OF A MINOR UNDER 18 YEARS OF AGE OR TO KNOWINGLY SELL OR OTHERWISE
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TRANSFER OWNERSHIP OR POSSESSION OF A FIREARM TO A MINOR OR A PERSON OF UNSOUND MIND.”
MAINE:
“ENDANGERING THE WELFARE OF A CHILD IS A CRIME. IF YOU LEAVE A FIREARM AND AMMUNITION WITHIN EASY ACCESS OF A CHILD, YOU MAY BE SUBJECT TO FINE, IMPRISONMENT OR BOTH. KEEP FIREARMS AND AMMUNITION SEPARATE. KEEP FIREARMS AND AMMUNITION LOCKED UP. USE TRIGGER LOCKS.”
MARYLAND:
“WARNING: Children can operate firearms which may cause death or serious injury. It is a crime to store or leave a loaded firearm in any location where an individual knew or should have known that an unsupervised minor would gain access to the firearm. Store your firearm responsibly!”
MASSACHUSETTS:
“WARNING FROM THE MASSACHUSETTS ATTORNEY GENERAL: This handgun is not equipped with a device that fully blocks use by unauthorized users. More than 200,000 firearms like this one are stolen from their owners every year in the United States. In addition, there are more than a thousand suicides each year by younger children and teenagers who get access to firearms. Hundreds more die from accidental discharge. It is
likely that many more children sustain serious wounds, or inflict such wounds accidentally on others. In order to limit the chance of such misuse, it is imperative that you keep this weapon locked in a secure place and take other steps necessary to limit the possibility of theft or accident. Failure to take reasonable preventative steps may result in innocent lives being lost, and in some circumstances may result in your liability for these deaths.”
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“IT IS UNLAWFUL TO STORE OR KEEP A FIREARM, PISTOL, SHOTGUN OR MACHINE GUN IN ANY PLACE UNLESS THAT WEAPON IS EQUIPPED WITH A TAMPER RESISTANT SAFETY DEVICE OR IS STORED OR KEPT IN A SECURELY LOCKED CONTAINER.”
NEW JERSEY:
“IT IS A CRIMINAL OFFENSE TO LEAVE A LOADED FIREARM WITHIN EASY ACCESS OF A MINOR.”
NEW YORK CITY, NY:
“THE USE OF A LOCKING DEVICE OR SAFETY LOCK IS ONLY ONE ASPECT OF RESPONSIBLE FIREARMS STORAGE. FOR INCREASED SAFETY, FIREARMS SHOULD BE STORED UNLOADED AND LOCKED IN A LOCATION THAT IS BOTH SEPARATE FROM THEIR AMMUNITION AND INACCESSIBLE TO CHILDREN AND OTHER UNAUTHORIZED PERSONS.”
NORTH CAROLINA:
“IT IS UNLAWFUL TO STORE OR LEAVE A FIREARM THAT CAN BE DISCHARGED IN A MANNER THAT A REASONABLE PERSON SHOULD KNOW IS ACCESSIBLE TO A MINOR.”
TEXAS:
“IT IS UNLAWFUL TO STORE, TRANSPORT, OR ABANDON AN UNSECURED FIREARM IN A PLACE WHERE CHILDREN ARE LIKELY TO BE AND CAN OBTAIN ACCESS TO THE FIREARM.”
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WISCONSIN:
“IF YOU LEAVE A LOADED FIREARM WITHIN THE REACH OR EASY ACCESS OF A CHILD YOU MAY BE FINED OR IMPRISONED OR BOTH IF THE CHILD IMPROPERLY DISCHARGES, POSSESSES, OR EXHIBITS THE FIREARM.”
* * * * * * * * * * * * * * * * * * * * *
Please check with your licensed retailer, state police, or local police for additional warnings which may be required by local law or regulation. Such regulations change constantly, and local authorities are in the best position to advise you on such legal matters.
WARNING - LOCKING DEVICES
This firearm was originally sold with a key operated locking device. While it can help provide secure storage for your unloaded firearm, any locking device can fail. All guns are designed to fire if they are loaded and the trigger is pulled. Therefore, never install the locking inside the trigger guard or in any way that it can possibly pull the trigger! Do not leave the keys in the lock.
The ultimate responsibility for secure storage of any firearm must depend upon its owner and his or her individual circumstances. Guns should be stored unloaded, in a secure location, separate from their ammunition.
NEVER INSTALL THE
LOCKING DEVICE INSIDE
THE TRIGGER GUARD
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TABLE OF CONTENTS |
|
Topic |
Page |
State-By-State Warnings |
1 |
Locking Device |
5 |
General Safety Information and Mechanical Characteristics |
9 |
1.0. Safety Rules |
9 |
1.1. Protect Your Eyes And Ears |
9 |
2.0. Mechanical Characteristics and Weapon Theory |
10 |
2.1. Weapon Description |
10 |
2.1.1. General |
10 |
2.1.2. Barrel With Receiver And Gas System |
10 |
2.1.3. Bolt |
11 |
2.1.4. Hand Guards |
11 |
2.1.5. Trigger Casing Assembly |
12 |
2.1.6. Gas Valve Position |
13 |
2.1.7. Not Applicable |
|
2.1.8. Trigger Guard Operation |
14 |
2.1.9. Sights |
15 |
2.1.10. Magazine |
18 |
2.2. Technical Specifications |
18 |
Operation of Safety |
19 |
The Bolt Catch Lever |
21 |
Ammunition |
22 |
To Load and Fire (With Magazine) |
26 |
3.0. Handling |
26 |
3.1. Important Instructions |
26 |
3.2. Loading The Pistol |
27 |
3.3. Loading The Magazine |
27 |
3.4. Changing the Magazine |
28 |
3.5. Reloading |
28 |
4.0. Ready to Fire |
29 |
4.1. Firing |
30 |
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4.1.1. Unlocking Of Bolt, Extraction, & Ejection |
31 |
4.1.2. Bolt Advance |
32 |
To Unload Magazine and Pistol |
36 |
5.0. Unloading |
36 |
To Extract and Eject a Chambered Cartridge . |
37 |
To Clear a Malfunction (“Jam”) |
38 |
6.0. Procedures In Case Of Malfunction |
38 |
To Minimize Malfunctions (“Jams”) |
40 |
To Disassemble |
40 |
7.0. Field Strip Disassembly |
40 |
To Reassemble |
44 |
7.1. Reassembly |
44 |
7.2. Function Check |
47 |
Magazine Inspection and Care |
48 |
Care and Cleaning |
49 |
Transportation & Storage |
49 |
Sights |
50 |
8.0. Sight Options |
50 |
Maintenance |
51 |
9.0. Maintenance |
51 |
9.1. Cleaning |
51 |
Service and Parts Policy |
52 |
Shipping Firearms for Repair |
54 |
Ordering Parts |
55 |
10.0. Parts List |
56 |
10.1. Parts Diagram |
57 |
The Basic Rules of Safe Firearms Handling |
58 |
Warranty Information |
59 |
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WARNINGS OF GREAT IMPORTANCE ARE FOUND
ON THE FOLLOWING PAGES:
Locking Devices |
5 |
Handling |
26 |
Alterations |
8 |
Firing |
35 |
Sights |
16 |
Handling |
35 |
Manual Safety |
20 |
Unloading |
37 |
Lead Exposure |
25 |
Storage |
50 |
Ammunition |
25 |
Parts Purchasers |
53 |
OTHER CAUTIONS AND WARNINGS APPEAR
THROUGHOUT THE MANUAL
FIREARMS ARE DANGEROUS WEAPONS – READ THE INSTRUCTIONS AND WARNINGS
IN THIS MANUAL THOROUGHLY AND CAREFULLY
BEFORE USING.
WARNING - ALTERATION
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 any parts or accessories not manufactured by SIG SAUER Inc.
DO NOT ALTER ANY GUN
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GENERAL SAFETY INFORMATION
AND MECHANICAL CHARACTERISTICS
1.0. Safety Information
The safety warnings in this manual are important. By understanding the dangers inherent in the use of any firearm, and by taking the precautions described herein, you can enjoy complete safety in the use of your pistol. Failure to heed any
of these warnings may result in serious injury to you or others, as well as severe damage to the firearm or other property. SIG SAUER Inc. shall not be responsible in any manner whatsoever for malfunctioning of the firearm, physical injury or property damage resulting in whole or in part from:
1)criminal or negligent discharge;
2)improper or careless handling;
3)unauthorized modifications;
4)defective, improper, hand-loaded, or reloaded ammunition;
5)corrosion;
6)neglect; or
7)other influences beyond our direct and immediate control.
This limitation applies regardless of whether liability is asserted on the basis of contract, negligence, or strict liability (including any failure to warn). Under no circumstance shall SIG SAUER Inc. be liable for incidental or consequential damages, such as loss of use of property, commercial loss, and loss of earnings or profits.
1.1. Protect Your Eyes And Ears
Always wear safety glasses and ear plugs or “earmuff” type protectors whenever you are shooting. Always make certain that persons close to you are similarly protected. Unprotected eyes may be injured by powder, gas, carbon residue, lubricant, metallic particles, or similar debris which may emanate occasionally from any firearm in normal use. Without ear protection, repeated exposure to shooting noise may lead to cumulative, permanent hearing loss.
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2.0.Mechanical Characteristics & Weapon Theory
2.1.Weapon Description
2.1.1. General
The P556 Pistol is a semi-automatic, gas operated weapon with a rotary bolt mechanism. Semi-automatic means one round will fire each time the trigger is pulled until the magazine is emptied of ammunition. The pistol is chambered in 5.56mm NATO and
is compatible with .223 Remington ammunition.
2.1.2. Barrel With Receiver And Gas System
The barrel is mechanically mated to the receiver. The flash suppressor is screwed onto the muzzle end of the barrel which features a Ω x 28 TPI thread pattern. The gas block, which is fixed on the barrel, contains the gas port, locates the gas system (gas tube and operating rod), accepts the front sight and also serves as support for the hand guards. The receiver guides the bolt and bolt carrier, and houses the locking system. An accessory mounting rail is fixed to the upper part of the receiver, providing an attachment point for sighting systems and other accessories.
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2.1.3. Bolt
The bolt consists of two main parts:
•Bolt Carrier
•Bolt Head
a.Bolt Carrier: The bolt carrier guides the bolt head, controls the locking and unlocking by means of the cam, holds the operating rod, and cocks the hammer.
b.Bolt Head: The bolt head
locks the bolt assembly, houses the firing pin and extractor and feeds the cartridges from the magazine to the chamber.
2.1.4. Hand Guards
The hand guards protect the barrel and the gas system from
damage. They also provide ergonomic positioning of the hands during operation as well as protecting the hands from burns.
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2.1.5. Trigger Casing Assembly
The trigger casing assembly contains the internal components of the firing and safety mechanisms, bolt catch, magazine well, magazine catch, trigger, trigger guard and pistol grip.
The safety lever, located on both sides of the trigger casing, can be set to two positions:
•Position “S:” The weapon is locked in the safe position.
•Position “F:” The weapon will fire in the semi-automatic mode.
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The trigger guard may be released from its normal position to make the trigger accessible for shooting with gloves. For safety reasons the trigger guard must not be released until just before firing the weapon, and after firing should be immediately returned to the normal (closed) position.
CAUTION: Be careful of accidental discharges when inserting gloved fingers into the trigger guard.
2.1.6. Gas Valve Position
The gas volume required for the function of the P556 pistol can be controlled by the gas valve. The gas valve has two positions:
a. Position 1 (Rib of gas valve in vertical position).
Under normal conditions, the gas valve should remain in Position 1. This will give the best all-around performance and function.
b. Position 2 (Rib of gas valve in the slanted position).
When cycling or ejection problems are encountered due to heavy
fouling, the gas valve can be moved to Position 2 by rotating clockwise as far as the stop. In this position, a larger gas volume is released against the operating rod. The need to use the gas valve in Position 2 is an indication that the pistol requires cleaning.
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CAUTION: In the case of a hot or heavily fouled weapon, use a cartridge or auxiliary aid to prevent burns to your fingers.
CAUTION: Firing with the gas valve in Position 2 is an exception. As soon as normal function returns, the gas valve must be returned to Position 1. Continued operation with the gas valve in Position 2 will increase recoil and place unnecessary stress on the pistol. The pistol should be cleaned as soon as conditions permit.
WARNING: Always ensure the pistol is unloaded and clear of ammunition when manipulating the gas valve.
2.1.8. Trigger Guard Operation
1.The trigger guard opens to accommodate firing the pistol with gloves or mittens.
2.To open the trigger guard, depress the spring loaded pin on the front right and rotate downward.
3.When glove access is no longer required, rotate the trig-
ger guard back into place, depressing the spring loaded pin and ensure the trigger guard is locked closed.
WARNING: Do not manipulate the trigger guard unless the pistol’s safety lever is on “S” (SAFE) and unloaded.
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2.1.9. Sights
The P556 pistol features an integrated accessory rail on the upper receiver for attaching a variety of sighting systems, both optical and fixed. The accessory rail is compatible with all Picatinny standard mounting systems. The pistol also features “emergency” flip up blade sights. These sights are designed to provide a backup aiming solution in the event your optics should fail but are certainly capable of be used as the sole sighting
system for the pistol.
Windage (left / right) adjustment:
Windage adjustments are made by rotating the front sight screw left or right. The adjustment screw head
is located on the left side of the front sight assembly. Adjustments are made using a 4mm allen key, available at any hardware store.
-Rotate front sight screw right (clockwise) to move impact right.
-Rotate front sight screw left (coun- ter-clockwise) to move
impact left.
One full rotation of the front sight screw will move the impact of the rounds approximately 1” at 100 yards.
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WARNING - SIGHTS
Do not adjust or otherwise manipulate any sight system on the rifle without first confirming the magazine is removed, the rifle is on “SAFE” and fully unloaded.
Failure to heed this warning could result in unintentional discharge, resulting in injury or death
UNLOAD RIFLE BEFORE MANIPULATING SIGHTS.
Emergency sight deployment
The pistol’s emergency sights are normally stored in a “stowed” condition to protect them from damage and prevent interference with optical sighting systems.
To deploy the emergency sights for use, do the following:
1.Flip the front sight blade into the “up” position. The front sight blade is retained in position by spring tension.
2.Flip the rear sight blade into the “up” position. The rear sight blade is held in position by spring tension.
3.When the emergency sights are no longer required, rotate the front and rear sight blades to their stowed position.
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Elevation (up / down) adjustment:
Elevation adjustments are made by raising or lowering the sight plate, inset on the back side of the rear sight blade.
-Loosen the phillips head screw
-Move the sight plate in the direction required for adjustment.
-Tighten the phillips head screw.
-Slide rear sight blade up to
move impact up.
- Slide rear sight blade down to move impact down.
One mark of movement on the rear
sight blade will move the impact of the rounds approximately 3/4” to 1” at 100 yards.
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2.1.10. Magazine
The pistol ships standard with (1) 30-round magazine. The P556 is compatible with M16/AR-15 type magazines.
2.2. Technical Specifications
Caliber |
5.56mm NATO (.223 Remington) |
Total length |
21.5 inches |
Barrel length |
10 inches |
Number of grooves |
6 |
Rifling |
1 in 7 |
Weight (w/out mag) |
6.3 lbs (Quad Rail add 0.4 lbs) |
Specifications are approximate and subject to change without notice.
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