Mossberg International SA-2 - Manual (Page 16)

16
CHOKE TUBES
BEFORE REMOVING OR INSTALLING ANY CHOKE TUBE:
Move the safety button so it is protruding fully out the right side of the
trigger guard indicating the “ON” (SAFE) position and keep muzzle pointed
in a safe direction.
Open the action, visually and physically check chamber, elevator, and
magazine tube to be certain firearm is unloaded.
Do not use bent or deformed choke tubes as these may result in tube or
barrel damage upon firing which may cause serious personal injury to you
or those around you. Inspect choke tubes periodically to insure they are
properly installed and in good condition. Pay special attention to the
threaded end of the choke tube to be certain it is not deformed or dented.
Never fire the shotgun without a choke tube properly installed. Failure to do
so will damage the precision threads on the inside of the barrel. Firing the
shotgun with loose choke tubes may lead to damage to the choke tube and
barrel, as well as serious personal injury to you or those around you.
CARE AND CLEANING: The precision threads on your choke tube should be kept
clean and lightly oiled at all times.
During cleaning of the barrel, be certain a choke tube is properly installed. This will
avoid residue build-up on threads.
TO REMOVE CHOKE TUBE: Loosen with choke wrench provided, turning it
counterclockwise (See Figure 15). When the choke tube is loosened, remove it
completely with your fingers. Place choke tube on a clean, dry surface.
TO INSTALL CHOKE TUBE: Screw the tube clockwise into the barrel by hand and
then tighten the tube until snug with the choke wrench (see Figure 16). These tubes
fit completely inside the barrel when properly installed. Do not use excessive force
when installing.
Choke tube tightness should be checked periodically.
Lead, steel, and other non-toxic shot patterns will vary substantially depending on
shell length, shot size, brand of ammunition, and the individual barrel. The shooter
is urged to conduct pattern tests before field use.
Figure 16 Figure 15
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