Mossberg FLEX System Shotguns - Manual (Page 14)

PART N0. 100848 REV. A 14
TO CHANGE REMOVABLE COMBS
Before making any comb changes, 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 shotgun is
unloaded. Also, be sure to keep the action open and the muzzle pointed
in a safe direction. Refer to your firearm’s owner’s manual for additional
safety and functional information.
1) Using a 3/16 inch Allen head wrench (supplied) unscrew and remove the
comb retaining screw found at the top center of the removable comb.
2) Place the desired comb into position. Insert the comb retaining screw and
snug-tighten. Do not overtighten as this will damage the internal assembly
components.
Fig. 29 High Comb
Fig. 30 Low Comb