Carlson's Choke Tubes Sporting Clay Choke Tube 12 Gauge Light Modified. These Choke Tubes manufactured by Carlson's Choke Tubes are made with a durable 1704 stainless steel to ensure that your Shotgun Choke will remain effective for many years. The Carlson's Sporting Clay Choke Tubes are able to throw more consistent patterns than conventional choke tubes because of the parallel section that is 25percent longer than previous models. These Carlson's Shotgun Chokes have the constriction type laser etched on the side for easy field reference. Specifications for Carlson's 12 Gauge Choke Tubes for Sporting Clay: Manufacturer: Carlson's Choke Tubes Color: Stainless Fabric/Material: 17-4 Stainless Steel Gauge: 12 Choke Tube System: Mossberg Accu-Choke Winchester Choke Browning Invector (Standard) Gun Make: Winchester Mossberg Browning Quantity: 1 Additional Features: Non-Ported Country of Origin: USA Features of Carlson's Sporting Clay Choke Tube for 12 Gauge: Works with Lead shot Steel Shot Copperplated Shot Nickel Shot Hevi-Shotshells and Buck Shot Throws patterns more consistently Knurled end for easy installation and removal Package Contents: Carlson's 12 Gauge Choke Tubes for Sporting Clay Carlson's Choke Tubes Sporting Clay Choke Tube 12 Gauge Light Modified 19773