Banded gas seal elminates residue buildup
Integrated spring suspension holds seal tight
Creates smooth transition from barrel to choke
Easy to install and remove
This Browning Extended Invector-DS Choke Tube extends beyond the end of your barrel for tight, consistent, reliable patterns for skeet to full choke. Proprietary differential banded gas seal eliminates residue build up and makes chokes easy to remove and install. Integrated spring suspension holds the seal tight, yet allows expansion against the barrel wall for a perfect fit and a smooth transition for shot column entering choke. Gas is controlled at the interface between choke and where it seats in the bore.