STANDARD INVECTOR, INVECTOR-PLUS AND INVECTOR-DS ARE NOT INTERCHANGEABLE. Make sure you know the system that fits your shotgun before proceeding. For advice on choosing a choke tube appropriate for your shotgun READ MORE HERE.

“DS” stands for double-seal, our proprietary differential-banded brass seal. It compresses against the barrel wall to keep the choke tube threads clean and makes installation and removal easier than any other muzzle thread system.

Invector-DS choke tubes combine muzzle-end threads and thin-wall construction for a longer, more gradually tapered choke tube that produces extremely consistent, dense shot patterns.

From Cylinder to Extra Full, Invector-DS shot patterns tighten consistently in reliable, evenly scaled steps.

Muzzle-end threads minimize the flare at the end of the barrel for improved shotgun appearance. A slightly lighter overall barrel weight is achieved for a faster swing and improved balance.

The more gradual taper of Invector-DS choke tubes reduces shot deformation for fewer flyers and gaps in the pattern and allows higher shot velocities for hard-hitting performance.

Invector-DS is standard on A5 and Citori 725 models.

Invector-DS Choke Tubes. The newest and most advanced Browning choke tubes

Browning Shotgun Invector-DS Choke Tubes Barrel Marking

On many shotguns, look for a barrel or monobloc stamp that says "Invector DS" like the one pictured above.

Invector-DS choke tubes fit only Browning shotguns with Invector-DS marked on the barrel(s) of autoloading and pump models or the monobloc of breakaway models.
They are much longer than other Browning choke tubes and have threads on the muzzle end of the tube.
DO NOT buy Invector-DS choke tubes if you have a shotgun marked Invector Plus (+) or Standard Invector.

Invector-DS Shotgun Choke Tubes