Iver Johnson 20 Gauge Improved Modified Mobil Choke Tube

The Iver Johnson 20 Gauge Improved Modified Mobil Choke Tube is a screw-in shotgun choke designed for 20 gauge shotguns chambered for the Beretta/Benelli Mobil thread pattern. It installs in place of the factory choke to deliver Improved Modified constriction.

Improved Modified constriction falls between Modified and Full on the standard choke spectrum, providing a tighter pattern than Modified without going to a true Full choke. The Mobil thread specification is one of the most widely supported patterns in modern production shotguns, and Iver Johnson's choke is dimensioned to interchange with Carlson's Beretta/Benelli Mobil thread chokes.

The choke is sold as a single tube intended for 20 gauge shotguns only and should not be installed in 12 gauge or 28 gauge firearms. Use only with shotshell loads appropriate for a 20 gauge chamber and choke combination.