DO NOT USE BROWNING INVECTOR CHOKE TUBES IN ANY SHOTGUN
BARRELS NOT SUPPLIED BY BROWNING. ALSO, DO NOT USE ANY OTHER
CHOKING DEVICE IN ANY SHOTGUN BARRELS SUPPLIED BY BROWNING.
USE ONLY THE APPROPRIATE GAUGE AND TYPE OF CHOKE TUBES MARKED
INVECTOR OR INVECTOR-PLUS.
CAUTION: WHENEVER HANDLING ANY SHOTGUN FOR THE PURPOSE OF
REMOVING OR INSTALLING A CHOKING DEVICE, MAKE ABSOLUTELY
CERTAIN THE GUN IS FULLY UNLOADED AND THE ACTION IS BROKEN
OPEN! NEVER ATTEMPT TO REMOVE OR INSTALL A SHOTGUN CHOKING
DEVICE ON A LOADED FIREARM!
TUBE REMOVAL—
1 Fully unload your BT-99.
ALWAYS UNLOAD YOUR SHOTGUN — FULLY. INSPECT THE CHAMBER TO
MAKE SURE IT DOES NOT CONTAIN ANY SHELLS.
2 Open the action using the top lever as explained previously.
3 Use the Invector wrench to loosen the tube, turning it counterclock-
wise. Finger twist the tube the rest of the way out of the barrel.
TUBE INSTALLATION—
1 Fully unload your BT-99.
ALWAYS UNLOAD YOUR BT-99 — FULLY. INSPECT THE CHAMBER TO MAKE
SURE IT DOES NOT CONTAIN ANY SHELLS.
2 Open the action.
3 Before installing a tube, check the internal choke tube threads in the
muzzle, as well as the threads on the Invector choke tube to be sure
they are clean. Lightly oil the threads with an oil like Browning Oil.
4 Using your fingers, screw the appropriate tube into the muzzle end of
the barrel, tapered end first, notched end outward. When it becomes
finger-tight, use the appropriate Invector choke tube wrench to firmly
seat the tube.
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