Jebs Choke Tubes Black Nitride Head Hunter 12 Gauge Turkey Choke Tube Benelli/Beretta Mobl Headhunter .650 Black Nitride JPCBN - 12F1/650. This choke tube has a constriction designed to keep the shooters flushing the bird at a further distance than a point-blank shooting distance. It has also been designed to keep the shooters muzzle hot for longer periods of time. Many shooters like the choke tube's convex out shape which allows for better gas flow and the generation of denser patterns. Its black nitride finish provides a durable non-reflective finish and gives the shooter a great non-slip surface for better shot deposition and crater less shot especially when shooting Hevi-slugs. Specifications for Jebs Choke Tubes Black Nitride Head Hunter 12 Gauge Benelli/Beretta Mobl Turkey Choke Tube: Manufacturer: Jebs Choke Tubes Finish: Black Nitride Gauge: 12 Choke Tube System: Beretta/Benelli Mobil Gun Make: Benelli Beretta Package Contents: Jebs Choke Tubes Black Nitride Head Hunter 12 Gauge Benelli/Beretta Mobl Turkey Choke Tube None Jebs Choke Tubes JPCBN - 12F1/650: 12 Gauge Benelli/Beretta Mobl Headhunter .650 Turkey Choke Tube Black Nitride