Browning Invector-DS 12 Gauge Improved Modified Extended Stainless Steel Choke Tube

The Browning Invector-DS extended choke tube is a factory-spec replacement choke for Browning shotguns chambered in 12 Gauge and equipped with the Invector-DS choke system, including back-bored barrels that require the longer DS taper. This particular tube is delivered in Improved Modified constriction, placing it between Modified and Full to produce a tight, versatile pattern well suited for mid-to-long-range waterfowl, upland bird, and sporting-clays shooting.

The tube is constructed from stainless steel and finished in a corrosion-resistant black coating. A knurled exterior provides a secure grip for hand installation and removal, while a brass end cap aids in tool engagement when tightening or loosening. The extended body projects beyond the muzzle, making pattern verification easier on the patterning board and helping protect the barrel crown from incidental contact in the field.

Browning part number 1133663, this is the OEM-correct upgrade or replacement for any Invector-DS-equipped 12 Gauge Browning shotgun, and its stainless steel construction stands up to years of field use in hunting and sporting environments.