Browning Invector DS 12 Gauge Improved Modified Choke Tube

Browning’s Invector-DS choke tubes feature a double seal design that maintains cleaner tubes throughout use. The extended choke tapers are optimized to specific percentages rather than dimensions alone. This tube fits flush with the barrel end while maintaining a longer profile than competing designs. A proprietary differential banded gas seal prevents residue accumulation and simplifies removal and installation. An integrated spring suspension mechanism keeps the seal engaged while permitting controlled expansion and gas flow. Invector-DS tubes are engineered exclusively for Browning shotguns marked for Invector-DS compatibility and cannot be used in shotguns marked with Invector-Plus or Standard Invector on the barrel.