Jebs Choke Tubes Upland and Windshooting 20 Gauge Choke Tube Browning Invector .580 Modified Upland Tube Matte Stainless JPC - 20C2/580. This shotgun choke by the experts at Jebs Choke Tubes is a matte black high performance precision made choke tube that combines the proven design of JEBS choke tubes with years of real world shooting experience. Using state of the art technology the Jebs Choke Tubes 20 Gauge Upland and Windshooting Choke Tube performs with a fraction of the recoil and recoil reduction of other choke tubes. This Jebs Choke Tubes 20 Gauge Choke Tube has a reduced number of choke turns for greater concentricity and longer choke life. Specifications for Jebs Choke Tubes Upland and Windshooting 20 Gauge Browning Invector Choke Tube: Manufacturer: Jebs Choke Tubes Finish: Matte Fabric/Material: 17-4 Heat Treated Stainless Steel Gauge: 20 Choke Tube System: Browning Invector (Standard) Gun Make: Browning Quantity: 1 Package Contents: Jebs Choke Tubes Upland and Windshooting 20 Gauge Browning Invector Choke Tube Jebs Choke Tubes JPC - 20C2/580: 20 Gauge Browning Invector .580 Modified Upland Tube Matte Stainless