The Carlson's Choke Tubes 09204 Bismuth Bone Buster Browning Invector-Plus 12 Gauge Mid-Range 17-4 Stainless Steel delivers a precision mid-range constriction of .025 inches in a rugged 17-4 stainless steel choke tube designed for Browning Invector-Plus systems, offering reliable performance for waterfowl and upland hunting with 12 gauge barrels. Built from corrosion-resistant stainless steel, this single choke is engineered to maintain repeatable patterning and durable service in demanding field conditions, making it a practical upgrade for shooters seeking consistent pellet deposition at practical hunting distances. Its Invector-Plus configuration ensures a secure fit and smooth installation across compatible Browning receiver interfaces, while the mid-range constriction is tuned to optimize pellet density and spread control without sacrificing energy delivery on late-season birds or fast-moving targets. Whether youre dialing in your shotguns versatility for field scenarios or refining your long-range lead with heavier loads, Carlson's 09204 choke provides a dependable balance of choke performance and material integrity, delivering predictable patterns that help you maximize each shot with confidence.