The Carlson's 07357 Delta Waterfowl Extended Range Steel Shot Choke Tube delivers true long-range performance for 20-gauge Browning Invector Plus setups, engineered from 17-4 stainless with a knurled blue finish and an extended 3/4" outside-the-barrel section to prevent barrel damage from prolonged steel shot use. This extended, longer parallel section reduces flyers and yields denser patterns, enabling reliable hits on targets at 40 yards and beyond. Carlson's new line patterns steel shot exceptionally well, accommodating larger steel shot sizes within tighter choke constrictions, so you can push shots farther without sacrificing pattern density. Designed for versatility, these tubes support close to mid-range steel shot performance across sizes while maintaining a durable build and a lifetime warranty. Use is guided by practical limitsdo not use steel faster than 1550 FPS or steel shot sizes larger than BB with the Long Range choke tubeensuring safe, effective operation across field applications. Ideal for waterfowl and upland hunting where longer-range shots are common, Carlson's extended range choke tubes pair precise threading, robust construction, and optimized patterning to maximize every shot in the field.