The Carlson's long beard ported 12 ga turkey choke tube (fits Browning Invector Plus shotguns) is manufactured from 17-4 stainless steel and has been specifically designed to produce the best patterns When shooting Winchester's new long beard XR turkey loads. This new ammunition featured shot-look technology that allows for the tightest patterns and longer downrange reach over any turkey load on the market. Pair this ammunition's capabilities with the new Carlson's long beard XR turkey choke and you have a devastating, gobbler-killing combination. This choke tube features a 25% longer parallel section thus throwing tighter and denser patterns downrange.