The Browning Invector Plus shotgun choke is an interchangeable choke tube system specifically designed for Browning shotguns that are built to accept this format. It features a longer internal design compared to older choke systems, which allows the shot charge to transition more gradually as it exits the barrel. This extended taper plays an important role in maintaining shot integrity, as it reduces pellet deformation and helps produce more consistent and evenly distributed patterns. This makes it highly effective for a wide range of shooting activities, including clay target disciplines and various types of hunting where pattern reliability is critical.

A key aspect of the Invector Plus system is its compatibility with back-bored barrels, which have a slightly larger internal diameter than traditional shotgun barrels. This combination improves overall performance by reducing pressure and recoil while allowing the choke to control the spread of the shot more efficiently at the muzzle. The result is a smoother shooting experience and improved pattern density at both shorter and longer distances, depending on the choke constriction selected. Shooters can choose from a variety of constrictions to match their specific needs, ranging from very open chokes for close-range targets to tighter chokes for longer-range accuracy.

The choke tubes themselves are typically manufactured from durable stainless steel, ensuring they can withstand repeated firing and resist corrosion over time. They are available in both flush-fitting designs, which sit level with the barrel for a clean profile, and extended versions that protrude slightly for easier handling and quicker changes in the field. Each choke is clearly marked for identification, making it simple to select the appropriate option. It is important to use only chokes specifically designed for the Invector Plus system, as they are not interchangeable with other Browning choke types due to differences in threading and dimensions.