19
Optional Shotgun Barrel Choke Tubes
WARNING
N
ever install or remove choke tubes while the firearm is loaded. Only install or remove choke tubes with the firearm unloaded, the action open
a
nd the trigger block safely engaged.
Screw in Chokes Symbols/Markings
The end of the choke tubes are marked with slashes to identify the choke construction:
/ - Full
// - Improved Modified
/// - Modified
//// - Improved Cylinder
CI - Cylinder
WARNING
MAKE SURE YOU FULLY TIGHTEN THE CHOKE TUBE.
Shooting with a loose choke tube can cause damage to your shotgun.
Additional Information On Screw Choke Tubes:
A. Only tighten or loosen choke tubes with flat key wrench supplied with shotgun. Note: wrench (and extra
choke tube or tubes if supplied) are under the cardboard in front of the combination rifle/shotgun
receiver in the box.
B. Never shoot the combination rifle/shotgun with a partially installed choke tube.
C. Model SPR 94 combination rifle/shotguns are available with fixed choke or screw choke shotgun barrels.
There are two types of screw chokes available: lead shot choke tubes and steel shot choke tubes. When
installed, steel shot choke tubes protrude approximately
3
/
4
” from the muzzle end of the barrel and the
mating lip will be flush with the end of the barrel. When installed, lead shot choke tubes fit flush with or
slightly below the muzzle end of the barrel. If you have lead shot choke tubes and intend to shoot steel
shot cartridges or slugs, then you must use only the IC or Cylinder tubes. DO NOT fire steel shot or slugs
in Modified, Improved Modified or Full lead shot choke tubes. If you have steel shot choke tubes, you
may fire steel shot cartridges through any of those choke tubes. DO NOT fire slugs in Modified, Improved
Modified or Full lead shot choke tubes or steel shot choke tubes.
Chart of Model SPR 94 Rifling Dimensions
Caliber of IZH94 Rifling Rate of Twist Rifling Groove Rifling Land
millimeter
inches
millimeter
inches
millimeter
inches
22LR 410 16.14 5.6 0.220 5.45 0.215
22WMR
406
15.98
5.69
0.224 5.56 0.219
17HMR 229 9.02 4.37 0.172 4.27 0.168
