Browning Diana Grade 12 Gauge Invector-Plus Extended Choke Tube - Improved Modified

The Browning Diana Grade Invector-Plus Extended choke tube is designed for use with back-bored 12-gauge shotgun barrels and produces tighter patterns than the standard Invector-Plus choke line. The extended-profile tube protrudes past the muzzle so constriction can be confirmed at a glance, and it installs and removes by hand without tools.

Each Diana Grade choke is machined from stainless steel barstock and heat-treated prior to machining, then finished with a titanium nitride surface coating rated at 72 HRC hardness for excellent wear resistance and reduced plastic wad buildup. This particular tube is the Improved Modified constriction.

Diana Grade extended chokes thread directly into Browning's Invector-Plus choke system on shotguns equipped with back-bored barrels.