Carlson's Delta Waterfowl Invector Plus Long Range interchangeable choke

A highly effective special choke designed specifically for steel shot!

Also works well with lead, copper, and HeviShot pellets.
Tighter and more uniform shot patterns than traditional chokes.
Longer than standard chokes to enhance shot dispersion.
Lifetime manufacturer's warranty.

Made from stainless 17-4 steel using precision machining. Matte black finish, the outside of the choke is textured.
Available in Mid Range and Long Range versions. Mid Range is suitable for shooting distances under 35 meters, while Long Range is for distances over 35 meters.
Restrictions for steel shot (Long Range): max. shot size 4.57 mm (BB), max. muzzle velocity 470 m/s. No restrictions for steel shot with the Mid Range version.