Carlsons choke tube flush mount 20ga imp mod invector

FEATURES
-Winchester
-20 gauge
-Improved modifiedchoke
-Diameter: .595
-Flush mount
-17-4 stainless steel

Other Features: .595 dia.,safe for use with steel,lead,copperplated, nickel,hevi-shot,& bismuth also fits mossberg accu choke & weatherby