Operating Instructions
Mod. SD22 Silencer
Length: 160 mm / 6.3 in.
Diameter: 30 mm / 1.18 in.
Weight: 235 g / 7.2 oz.
Adapter
Silencer
GB
This silencer was designed for the Walther P22. The silencer works by
relaxing, cooling and slowing down the propellant gasses.
A silencer can only reduce the muzzle report of a weapon, neither the
supersonic crack nor the flying noise of a bullet. For minimal shooting
noise it es essential to use a type of ammunition which delivers subsonic
bullet speed, i. e. less than app. 1100 ft/s.
The SD22 silencer was designed as a so called “dry” silencer. Good performance is achieved without inserting liquids, grease or oil into the first
chamber. However, by adding small amounts of this substances, the
suppression effect can be significantly improved for several shots. It also
helps suppressing the first round pop syndrome. The bullet path must not
be blocked. It is not recommended to use shaving gels, as it forms sticky
residues.
IMPORTANT NOTICE!
Make yourself familiar with the use and functioning of the silencer prior to its use.
Carefully read and understand the operating instructions.
Never apply force when using, mounting or dismounting the silencer.
A safe operation of the silencer is only assured as long as it is in a flawless technical condition.
Incorrect handling and lack of maintenance may lead to malfunctions and reduced
safety.
Unauthorized modifications to the mechanism, damages caused by the application of force and modifications effected by third parties will lead to the manufacturer
not to assume any liability.
Always bear in mind: Keep your finger away from the
trigger unless you really intend to fire. Always keep your
weapon pointing in a safe direction so that you and
others cannot be endangered.
Handling
It is preferable to use pistol loads when shooting with the suppressor, as the propellants loaded in this kind of ammunition usually burn quicker and cleaner. This prevents the silencer from impact of kernels of unburnt powder.
Do not use ammunition of more than 45 grs. bullet weight; too heavy subsonic bullets
tend to tumble during flight. This may cause baffle contact and may lead to damages
of the silencer and pistol.
Silencers retain both hot and high-pressurized gasses that escape through the ejection port. Do always wear safety goggles when shooting with a silencer.
Maintenance
The SD22 silencer should only be disassembled in an authorized workshop. During
normal use, it is not necessary to disassemble the silencer.
After a shooting session, spray a small amount of Break Free, Liquy Moly or something
similar into the silencer form the threaded side and shake or roll it to distribute the oil
evenly. This will help to avoid or loosen carbon build-up.
Threads: M 12 x 1
Materials: Tube, Baffles from aluminium,
connecting piece, cover plate
Suppression rate*: dry +20 dB (A)
wet +25 dB (A)
protective cap
Silencer
adapter
Illustr.1
*NATO Mil Standard 1474 C; Ammunition Eley Pistol Standard
The suppression rate is not constant, but depends on environmental conditions,
ammunition and can vary considerably. Also, there is a so called “first-round-pop”,
this means the first shot from cold barrel and silencer is louder than subsequent
shots.
Mounting the silencer:
1. Retract the slide of your pistol and use the enclosed spanner to remove
the barrel nut of your weapon (illustr. 2).
2. Screw adapter onto barrel and use the spanner to finger-tighten it (illustr. 3).
3. Screw silencer onto treaded adapter and finger-tighten it (illustr. 4)
When firing the weapon with the silencer removed, you should either protect the
threaded section of the adapter with the enclosed protective cap or you should replace
the adapter with the barrel nut.
Illustr. 2
Illustr. 3
Illustr. 4
protective cap
Silencer
Mounting and dismounting the silencer
silencer and thread protection
CAUTION! Engage the safety of your weapon, remove the
magazine and check your weapon, it must be
unloaded and the chamber must be clear.
Cleaning
To clean the silencer, insert it into petroleum or weapon oil for serveral days. Rinse
from time to time. Then rinse with hot soapy water and blow and blow dry with compressed air or by storing on a radiator. Apply a light oil film on the in- and outside of
the silencer.
All technical changes and modifications reserved
273 27 42.01-07.1,0.18
January 2007 - Rev. B
Marketing
Vertrieb:
Postfach 2740
D - 59171 Arnsberg
Donnerfeld 2
D - 59757 Arnsberg
Tel. 02932 / 63 81 00
Fax 02932 / 63 81 49
Technik
Service:
Postfach 4325
D - 89033 Ulm
Im Lehrer Feld 1
D - 89081 Ulm
Tel. 0731 / 15 39 0
Fax 0731 / 15 39 109
Carl WALTHER GmbH - Sportwaffen
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