The TEAGUE super extended choke protrudes from the end of the barrel, adding length to the barrel and providing a longer tapered section in the choke for a more consistent pattern. The knurling on the top of the choke allows you to change the chokes by hand without a key. Manufactured in England from aerospace grade high-tensile stainless steel on state of the art CNC machinery. Our choke dimensions are made to exacting tolerances based on the guns precise bore size and our field-tested constriction dimensions. This choke is for the Benelli Super Sport system. If you are unsure of whether this choke is suitable for your gun, please compare the length of an existing choke and the location of the thread to the product image.