Browning Diana Grade 12 Gauge Invector Plus Extended Choke Tube Cylinder

The Browning Diana Grade 12GA choke tube delivers precision engineering through its stainless steel construction with titanium nitride finish. Designed as a Cylinder choke for use with Invector-Plus compatible back-bored barrels, this extended tube features a longer choke taper inside the Invector-Plus system. The stainless steel barstock undergoes heat treatment prior to machining, and the titanium nitride surface achieves 72HRC hardness for excellent wear resistance and reduced plastic buildup. Absolute concentricity ensures superior patterning performance. The extended design projects beyond the barrel for straightforward removal and installation.