Owner’s Manual 2013

28 29
14.1. CHOKE TUBE SELECTION
To help you choose the correct choke
tube for each shooting situation, all
Invector choke tubes are inscribed
on the side with the patterns they
produce with both lead and steel
shot. Each Invector choke tube also
has notches in the top rim of the tube
(Figure 8, page 27). These notches
are a code to allow you to determine
the choke designation while the tube
is installed. Rim notches refer specifically to lead shot.
Use the charts on page 27 to cross-reference from lead shot to steel shot,
and determine the appropriate tubes for your ammunition and shooting
situation. An improved cylinder choke tube is installed in your shotgun.
Other choke tubes listed are available as accessories. Remember, Standard
Invector, Invector-DS and Invector-Plus tubes are not interchangeable.
Invector-Plus tubes are for FNH USA shotguns with back-bored barrels only.
Before removing or installing tubes, or reading the rim notch code, make
sure your shotgun is completely unloaded.
14.2. CHOKE TUBE REMOVAL
1. Place the “safety” in the on safe position. Always make sure the
shotgun is completely unloaded. Always keep the muzzle pointed in
a safe direction.
2. Use the choke tube wrench to loosen the tube, turning it
counterclockwise. Finger-twist the tube the rest of the way out of
the barrel (Figure 9).
14.3. CHOKE TUBE INSTALLATION
1. Place the “safety” in the on safe position. Always make sure the
shotgun is completely unloaded. Always keep the muzzle pointed in a
safe direction.
2. Before installing a tube, check the internal choke tube threads in the
muzzle, as well as the threads on the choke tube to be sure they are
clean. Lightly oil the threads with a high-quality, lightweight gun oil.
3. Using your fingers, screw the appropriate tube into the muzzle of the
barrel, threaded end first, notched end outward. When it becomes
finger-tight, use the choke tube wrench to firmly seat the tube.
Notice! THE CHOKE TUBE SHOULD BE PERIODICALLY
CHECKED TO ASSURE THAT IT IS TIGHT AND FIRMLY
SEATED. BEFORE CHECKING, FOLLOW ALL CHOKE TUBE
REMOVAL AND INSTALLATION SAFETY GUIDELINES
PREVIOUSLY OUTLINED.
15. SIGHT ADJUSTMENT
BEFORE PREFORMING ANY SIGHT ADJUSTMENT
PROCEDURES TO YOUR SHOTGUN, PLACE THE “SAFETY”
IN THE ON SAFE POSITION. UNLOAD THE MAGAZINE,
OPEN THE ACTION AND MAKE CERTAIN YOUR SHOTGUN IS
COMPLETELY UNLOADED. KEEP THE MUZZLE POINTED IN
A SAFE DIRECTION. FAILURE TO FOLLOW THESE WARNINGS
COULD RESULT IN SERIOUS INJURY OR DEATH.
The P-12 incorporates a Weaver-pattern cantilever scope mounting rail
fitted with a low-profile, blade-type rear rifle sight. The rear sight is
adjustable for both windage and elevation. The front sight blade is a
fiber-optic design that is ideal for fast target engagement.
FIGURE 9
Remove the Standard Invector choke tube
using the wrench supplied