PTG Interchangeable Pilot Screw In Choke Reamer Remington Rem Choke 12 Gauge

This PTG Interchangeable Pilot Screw In Choke Reamer is for use with interchangeable pilot bushings. Round shaft for use in a lathe. Before use, be sure there is no constriction or choke in the barrel. Specific Choke Types:Tru-Choke for use with barrels that are too thin for Win-Choke. Outside diameter .020" smaller than Win-Choke.12 gauge .795" - 44 tpi, accepts standard Tru-Choke tubes. 20 gauge .675" - 44 tpiTru-Choke thinwall for over and under, lightweight single shot, side by side with thin barrels. 0.020" thinner than standard Tru-Choke tubes.12 gauge .775" - 44 tpi, accepts thinwall style tubes only.Win-Choke for threading barrels to accept original equipment tubes from Win-Choke, Mossberg AccuChoke, Weatherby, Browning Invector.12 gauge .814" - 32 tpi. 20 gauge 11/16" - 32 tpi.Rem-Choke barrels will accept Rem-Choke and Remington factory tubes.12 gauge .814" - 32 tpi.