Carlson's Choke Tubes Ported Turkey Choke Tube 12 Gauge Benelli Crio Plus. Each Shotgun Choke by Carlson's Choke Tubes has been specifically bored to throw the optimum pattern at short and long distances. Each 12 Gauge Turkey Choke Tube By Carlson's Choke Tubes is ported allowing gases to escape quickly reducing recoil and muzzle jump in the process. The Carlson's Ported Turkey Choke is manufactured from aircraft stainless steel to ensure that your Carlson's Shotgun Choke will remain effective for many years. Specifications for Carlson's 12 Gauge Ported Turkey Choke Tubes: Manufacturer: Carlson's Choke Tubes Color: Black Fabric/Material: 17-4 Stainless Steel Gauge: 12 Choke Type: Turkey Quantity: 1 Additional Features: Ported Country of Origin: USA Features of Carlson's 12 Gauge Turkey Shotgun Choke: Perfect for Turkey hunting Tightens shot patterns Ported to reduce recoil and muzzle jump Made to throw ideal patterns at any distance Package Contents: Carlson's 12 Gauge Ported Turkey Choke Tubes Carlson's Choke Tubes Ported Turkey Choke Tube 12 Gauge Benelli Crio Plus 67099