Browning Invector-DS Extended Choke Tube Features The Browning Invector-DS Extended choke tube is machined from stainless steel a material selected for its ability to resist corrosion and hold a precise constriction through repeated firing. Its Improved Modified constriction delivers a pattern denser than Modified while still offering enough spread for birds flushing at varying distances making it a versatile option for a day afield. The Invector-DS thread pattern seats securely into compatible 16 Gauge Browning barrels giving the shooter a consistent repeatable fit each time the tube is installed. This reliable seating is essential to maintaining predictable pattern performance from one shot to the next. Unlike a flush mounted choke the extended design protrudes slightly past the muzzle giving the shooter a surface to grip for fast tool free changes between stands or hunting locations. This extended profile also helps some shooters quickly identify which choke is installed at a glance. The stainless steel construction stands up to the rigors of repeated cleaning and field exposure without degrading the internal geometry that controls pattern density. The Browning Invector-DS Extended Improved Modified choke tube gives 16 Gauge shooters a durable easy to swap way to adjust their shotgun s performance in the field. Browning Invector-DS Extended Choke Tube Specifications Manufacturer: Browning Gauge: 16 GA Color: Black Material: Stainless Steel Constriction Type: Improved Modified Style: Extended Choke Configuration: Invector-DS Available At: GrabAGun