UNCTION TESTING
F
After performing any work on your firearm such as cleaning, disassembly,
or installation of any accessory, check your firearm for proper functioning
before firing any live ammunition.
CHANGING
Be sure the firearm is completely unloaded by visually and physically
checking the chamber, elevator, and magazine tube. Also make certain
the muzzle is pointed in a safe direction at all times.
1. Move the safety button fully rearward to the “ON” (SAFE) position.
2. Grasp the operating handle and pull the bolt fully rearward. It should lock in
the open position.
3. With fingers and other objects clear of the ejection port, press the bolt release
and allow the bolt to move forward under spring pressure. It should lock in the
fully closed position. Repeat this procedure several times to check for free
movement of the action assemblies.
4. With the action closed and the safety button fully rearward in the “ON” (SAFE)
position, pull the trigger fully rearward. The hammer should not fall (NO FIRE).
5. Remove your finger from the trigger. Move the safety button forward to the
“OFF” (FIRE) position. The hammer should not fall (NO FIRE).
6. Leave the safety button forward in the “OFF” (FIRE) position.
7. Pull the trigger rearward. The hammer should fall (FIRE).
8. Open the action. Move the safety button rearward to the “ON” (SAFE)
position.
IF YOUR FIREARM DOES NOT PERFORM AS DESCRIBED IN ANY OF
THE ABOVE STEPS, CONTACT THE FACTORY AUTHORIZED PRODUCT
SERVICE CENTER IMMEDIATELY. DO NOT ATTEMPT TO USE THE
FIREARM.
BARRELS
930TMAND 935
AUTOLOADING
SHOTGUN
Figure 4
TM
After performing any work on your firearm such as cleaning, disassembly,
or installation of any accessory, check your firearm for proper functioning
before firing any live ammunition.
Firearms are complicated mechanisms. Any modification, alteration, or
improper fitting of parts may result in a dangerous malfunction, damage
PART NO. 18973 REV A
O.F. MOSSBERG & SONS, INC.
VEN, CT 06473
.O. BOX 497 • 7 GRASSO A
P
PHONE (800) 363-3555
www.mossberg.com
VENUE, NOR
TH HA
to the firearm and injury to the shooter and others. The firearm’s owner
esponsible for the corr
is r
after any disassembly or replacement of parts.
isually and physically inspect the chamber and bor
V
make certain it is free of any obstructions, excessive oil or grease. If you
are unable to remove any obstruction, bring the firearm to a qualified
gunsmith or send it to a factory authorized Product Service Center.
Obstructions of any kind can result in damage to the firearm and/or serious
personal injury to you or those around you when the firearm is fired.
ect reassembly and functioning of the fir
e of the barr
earm
el to
Safety and safe firearms handling is everyone’s responsibility.
5
ISASSEMBLY
D
Move the safety button fully rearward to the “ON” (SAFE) position and
visually and physically check the chamber, elevator, and magazine tube
to be certain the firearm is unloaded before disassembling the firearm.
Wear eye protection during disassembly and cleaning.
GAS SYSTEM REMOVAL
Remove the seal ring*, gas piston, spacer tube, pusher assembly, gas system
return spring, and forearm retainer from the magazine tube (Figure 10). Note the
orientation of the seal ring* for reassembly. The angled surface of the seal ring*
must face outward.
BARREL AND GAS SYSTEM RE-ASSEMBLY
Barrels are not interchangeable between model numbers, gauge or
apacity.
c
TM
30
9
a
nd 935
TM
odel barrels are interchangeable only with
m
barrels of the same model, gauge and capacity.
1. Grasp the operating handle and lock the action in the “OPEN” position (Figure 15).
BARREL REMOVAL
The action must be in the open position (bolt fully rearward).
1. Unscrew the magazine cap (Figure 9).
2. Slide forearm forward.
3. Pull the barrel forward, free of the receiver and magazine tube.
RETURN SPRING
FOREARM RETAINER
*Seal ring is not used in all models
PUSHER ASSEMBL
Figure 10
Y
S
PACER TUBE
GAS PISTON
S
EAL RING*
2. Install the forearm retainer, gas system return spring, pusher assembly, spacer tube, gas piston, and seal ring* onto the magazine tube. Note the orientation of the seal ring*. Angled surface of the seal ring* must face out.
When interchanging barrels (combo models) or reinstalling the original
barrel onto the firearm, YOU MUST ensure that the gas piston and seal
ring* are present on the magazine tube prior to installing the barrel (see
Figure 15). If the gas piston and seal ring* are not present on the
magazine tube, remove them from the gas cylinder portion of the barrel
that was on the firearm previously and place them onto the magazine
tube as shown in Figure 15. Failure to do so may result in a dangerous
malfunction, damage to the firearm and injury to the shooter and other
persons. The firearm’s owner must accept full responsibility for the
correct reassembly and functioning of the firearm after any disassembly
or replacement of parts.
3. Install the barrel into the receiver and over the magazine tube. Continue to
push the barrel into the receiver until fully seated. If the barrel binds during
assembly, slide the gas piston forward, towards the gas cylinder. This should
allow the barrel to seat.
4. Install the forearm.
Figure 9
*Seal ring is not used in all models
5. Install magazine cap. Tighten cap hand-tight only
2 3 4
Figure 15
.
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