Jebs Choke Tubes Black Nitride Head Hunter 12 Gauge Turkey Choke Tube Benelli SBE-11/M2 Crio Headhunter .660 Black Nitride JPCBN - 12E1/660. Black Nitride also has an anti-adhesion coating which makes it easier to keep your choke tube and especially the muzzle clean from dirt grease or other contaminates. We offer these choke tubes in a standard non-reflective black nitride finish or we can custom nickel-plate and anodize them for a little more color and durability. All our chokes are A B and C type choke tested. Our standard chokes are much more convex than a Modified therefore the flush areas at the top and bottom of the choke tube are much smaller than those found on most flush chokes. The concave portions allow for better gas flow and less muzzle jump resulting in denser patterns than a standard choke tube. Specifications for Jebs Choke Tubes Black Nitride Head Hunter 12 Gauge Benelli SBE-11/M2 Crio Turkey Choke Tube: Manufacturer: Jebs Choke Tubes Color: Black Finish: Nitride Gauge: 12 Choke Tube System: Benelli Crio Gun Make: Benelli Gun Model: Benelli Super Black Eagle II Benelli M2 Quantity: 1 Package Contents: Jebs Choke Tubes Black Nitride Head Hunter 12 Gauge Benelli SBE-11/M2 Crio Turkey Choke Tube None Jebs Choke Tubes JPCBN - 12E1/660: 12 Gauge Benelli SBE-11/M2 Crio Headhunter .660 Turkey Choke Tube Black Nitride