Smith & Wesson Sigma Instructions Manual

							FIELD STRIPPING DISASSEMBLY CONT’D.
21
BARREL
LUG
FIGURE 15FIGURE 16
FIGURE 17
FIELD STRIPPING
REASSEMBLY
•With the rear of the slide pointed in a safe direction and the 
bottom of the slide turned up, replace the barrel in the slide 
so the muzzle is flush with the end of the slide and the barrel 
lug is turned up (away from the ejection port). Replace the 
recoil spring on the recoil spring guide. Insert the spring end 
of the recoil spring guide assembly in the guide housing.
(Figures 18 & 19)
Grasp the recoil spring guide bushing and pull it toward you 
enough so the bushing can be securely engaged in the small 
radial machine cut in the barrel lug. Be careful that it does 
not become disengaged, fly out and cause injury. Make sure 
it is properly centered in the cut as it will protrude from the 
slide after assembly if it is not centered.
(See Figures 20a & 21a)
FIGURE 19FIGURE 18 
						

							22
DISASSEMBLY (see Figure 23)
1. Using a drift punch, depress floorplate catch (1) through hole 
in magazine floorplate (2).
2. Slide magazine floorplate (2) out of magazine tube (3) 
while holding floorplate catch (1) in the magazine tube (3).
3. Remove floorplate catch (1) and magazine spring (4) out 
through bottom of magazine tube (3).
MAGAZINE DISASSEMBLY 
ASSEMBLY
1. Install magazine spring (4) and floorplate catch (1) into the 
magazine tube (3) in exactly the same orientation as they 
were in when they were first removed during disassembly (as 
shown in Figure 23).
2. While holding floorplate catch (1) in magazine tube (3), slide 
magazine floorplate (2) into magazine tube (3) so that the 
round projection of the floorplate catch (1) engages the 
magazine floorplate (2).
MAGAZINE ASSEMBLY 
•Holding the slide and recoil spring guide firmly in one hand, 
place the rear of the slide onto the frame rails. (Figure 22) 
Continue moving the slide onto the frame until the slide is 
fully rearward before allowing it to move forward to 
the closed position.
FIGURE 22 FIGURE 20 FIGURE 20a
FIGURE 21
FIGURE 21a
FIELD STRIPPING REASSEMBLY CONT’D. 
						

							23
(1)
(2) (3)(4) FIGURE 23
FIELD STRIPPING REASSEMBLY CONT’D.
LUBRICATION
There are six (6) lubrication points where a single drop of
firearms lubricant should be applied. This will assure proper
lubrication of your sigma series pistol. Care should be taken not
to over-lubricate. Excess lubricant can collect large quantities of
unburnt powder and carbon residue, which could interfere with
proper functioning of the pistol.
FIGURE 25FIGURE 24 
						

							CLEANING AND
MAINTENANCE
!!  WARNING  !!
Ensure your pistol is unloaded before beginning to clean it.
At all times follow the basic rules of safe gun handling.
Your pistol is a precision instrument and to insure reliable 
function, it is necessary to follow a routine maintenance 
procedure. After firing your pistol, be sure to unload it following
the procedure outlined in the section entitled “Unloading” on
page 19 before any cleaning or maintenance procedure. Your
pistol should be cleaned by brushing the barrel bore and 
chamber with a good powder-removing solvent and bore brush.
Wipe the areas clean with patches or a swab. Using a small
brush dipped in solvent, remove all deposits from around the
breech of the barrel, and chamber, extractor and adjacent areas
which have been subjected to the action of powder or primer
residue. Remove any residue on the frame with light brushing
and a solvent. After cleaning the entire gun, use a cloth to apply
a light film of high quality gun oil to all external surfaces and
wipe clean.
CAUTION:You should avoid prolonged solvent emersion and
prolonged ultrasonic cleaning of your firearm. Choice of solvent
should be restricted to those products specifically developed for
firearms maintenance. Instances of damage to a firearm’s finish
have been recorded when these cautions have been ignored.
Ammoniated solvents which are chemically basic should not be
used on any Smith & Wesson firearm. As a rule of thumb, if you
would be comfortable applying the solvent of your choice to the
finish of your automobile, it will probably be safe for use on your
firearm.
After the initial cleaning, there is usually some residue in both
the barrel and cylinder that works out and becomes apparent
within 24-48 hours. This can be removed with a bristle brush
and a light re-application of powder removing solvent after which
the oil film should be re-established on all surfaces.
Cleaning is considered essential in order to ensure the proper
functioning of your handgun.
For additional maintenance, we recommend the services of a
qualified gunsmith. Please refer to section entitled “Service”. If
your firearm will be used or stored in a cold climate, be sure to
use an oil that will not thicken at low temperatures.
24 
						

							25
SERVICE,
SHIPPING & PARTS
SERVICE
Should your Smith & Wesson firearm require service, it should
be returned to Smith & Wesson in its original case or in a
similarly secure container. It is not necessary to take the gun to
a dealer for shipment. However, before shipping your firearm,
call or e-mail our Customer Service Dept. for authorization and
shipping instructions.
Before shipping your handgun, ensure that the firearm is
unloaded, package it securely, and do NOTship any ammunition.
The package must NOT bear any markings which indicate the
identity of the contents. Enclose a letter which includes your full
name and address (no P.O. Boxes, please), daytime telephone
number, e-mail address, the serial number of the firearm, and
details of the problem experienced or work desired. Record the
serial number before shipping, in case you wish to check on the
repair status of your firearm.
Ship Centerfire pistols and ALL
revolvers to:Customer Service, 2100 Roosevelt Avenue, Springfield, MA  01104
Ship ALL .22 caliber pistols to:Customer Service, 19 Aviation Drive, Houlton, ME  04730
Please call the above telephone number or e-mail the above
address before shipping!!
Since we cannot assume responsibility for custom parts and
accessories, such as stocks, special sights, or holsters, please
remove these items before returning your firearm.
Warranty repair work will begin upon receipt and examination of
the firearm. In the case of repairs or work not covered by the
warranty, a quotation covering the cost of the work plus round
trip transportation charges will be sent to you. Repairs or
modification will begin upon receipt of payment.
Customer Service
2100 Roosevelt Avenue
Springfield, MA  01104
Tel: 800-331-0852 • 413-781-8300
E-mail: [email protected]
For Owners Within The United States 
						

							26
SHIPPINGWhen shipping a firearm, it is most important that you comply
with federal, state, and local laws and regulations. The following
guidelines are meant to help, but you must seek assistance from
the appropriate authorities if necessary.
•Check magazines and chambers to ensure that they 
are unloaded. Do not ship ammunition.
•Do not attempt toMAILa handgun; only federally 
licensed dealers may mail a firearm.
•If your firearm must be replaced, it may be necessary 
to ship the replacement to a dealer rather than directly 
to you. You will be requested to furnish a signed FFL
(Federal Firearms License) from your dealer in such an 
instance.
•When returning a pistol, please include all magazines 
ensuring they are unloaded; they are important to the 
proper function of the handgun.
 A
CCESSORIES &PARTSReplacement parts and accessories for your Smith & Wesson
firearm are available from your local Smith & Wesson Stocking
Dealer, or directly from the Smith & Wesson Parts Department.
When ordering parts directly from the factory, please provide the
following information:
•Model Number
•Dash Number
•Serial Number
•Approximate date of purchase
•Part view Number (refer to diagram)
•Complete Return Address
•VISA/Discover/MasterCard Number and
Expiration Date
•For Foreign Orders Only, Fax Number or E-mail 
Address
SERVICE, SHIPPING, & PARTS  CONT’D. 
						

							27
WARRANTY
For Owners Within The United States
This warranty is granted by Smith & Wesson, 2100 Roosevelt
Avenue, P.O. Box 2208, Springfield, MA  01102-2208.
This warranty is effective from the date of purchase after
February 1, 1989 and applies to the original owner of any
handgun purchased after that date. With respect to such
handguns, this warranty supersedes any and all other
warranties.
Smith & Wesson handguns are warrantied to be free from defects
in material and workmanship. Any such defects of which
Smith & Wesson receives written notice within one year from the
date of purchase by the original owner, will be remedied by
Smith & Wesson without charge within a reasonable time after
such notification and delivery of the handgun as provided below.
If any unsafe and/or illegal condition if found during warranty
inspection, Smith & Wesson will return the handgun to its original
specification.
Warranty claims (in writing) and the handgun concerned should
be delivered to Smith & Wesson’s Customer Service Department
at the above address. In addition, a copy of the bill of sale in the
owner’s name, or a copy of ATF Form 4473 indicating date of
purchase must be included.
Warranty claims should state the model and serial number of the
handgun concerned and the description of the difficulty experi-
enced. It is recommended that shipments be insured by the
owner, since Smith & Wesson will accept no responsibility for loss
or damage in transit. Transportation and insurance charges for
return to owner will be paid by Smith & Wesson if the claim is
covered by the warranty.
UNDER NO CIRCUMSTANCES SHALL SMITH & WESSON BE
RESPONSIBLE FOR INCIDENTAL OR CONSEQUENTIAL
DAMAGES WITH RESPECT TO ECONOMIC LOSS, INJURY OR
PROPERTY DAMAGE, WHETHER AS A RESULT OF BREACH
OF EXPRESS OR IMPLIED WARRANTY, NEGLIGENCE OR
OTHERWISE.
Some states do not allow the exclusion or limitation of incidental
or consequential damages, so the above limitation or exclusion
may not apply to you in whole or in part.
Smith & Wesson will not be responsible for defects resulting from
careless handling, unauthorized adjustments or modifications,
defective or improper ammunition, corrosion, neglect, abuse,
ordinary wear and tear, or unreasonable use.
Smith & Wesson reserves the right to determine what constitutes
ordinary wear and tear. However, we can rebuild handguns that
have experienced extreme usage or are beyond their normal use-
ful life at a fee that will be quoted to the owner.
This warranty gives you specific legal rights. You may also have
other rights that vary from state to state. 
						

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EXTENDED
SERVICE POLICY
For Owners Within The United States
Even after the warranty period has expired, Smith & Wesson will
repair, without charge, any handgun purchased by the original
owner on or after February 1, 1989 that is found to have defect in
material or workmanship. Eligibility for this extended service 
policy requires returning the Product Registration Card within thir-
ty days of purchase. A copy of the bill of sale in the owner’s name
and the sales receipt should accompany the handgun.
If any unsafe and/or illegal condition is found during warranty 
inspection, Smith & Wesson will return the handgun to its original 
specification.
This policy covers functional defects; it does not include the hand-
gun’s finish, grips, magazines or sights.
This policy is in addition to and not an extension of the 
Smith & Wesson Warranty.
Lifetime Service Policy
Fast Reliable ServiceIf you have any questions or concerns regarding your 
Smith & Wesson product, please give us a call. Our customer
service representatives are product knowledgeable and are here
to help you.
911 Priority Repair Ser
viceIn the event of an emergency (repairs needed by law enforce-
ment, an upcoming match or hunting trip), call 1-800-331-0852
and ask for 911 Priority Repair Service. This allows you to speak
with a Smith & Wesson representative. Immediately upon receipt,
your handgun will be assigned to a gunsmith. After the work is
completed, we will return your Smith & Wesson handgun via
overnight delivery. 
						

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COMPONENT PARTS
View Description
1Frame
2Magazine Catch
3Frame Plug
4Magazine Follower
5Magazine Spring
6Magazine Butt Plate Catch
7Magazine Butt Plate
8Magazine Tube
9Barrel Stop Spring
10 Take Down Catch/Barrel Stop
11 Ejector
12 Sear Housing Block Assembly
13 Trigger Bar Assembly
14 Locking BlockView Description
15 Slide Stop Lever Assembly
16 Trigger Pin
17 Sear Housing Block
Assembly Pin
18 Safety Plunger Spring
19 Striker Safety Plunger
20 Extractor
21 Striker Assembly
22 Extractor Spring Assembly
23 Slide End Cap
24 Rear Sight
25 Front Sight
26 Barrel
27 Recoil Spring Assembly 
						

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NOTES