Carlson's Choke Tubes M835 / M935 Ulti-Mag Shotgun 12 Gauge Replacement Flush Mount Improved Cylinder. Made of 1704 Stainless Steel these Shotgun Chokes made by Carlson's Choke Tubes will last for many years to come. The Carlson's Choke Tubes 12 Gauge Ulti-Mag Flush Mount for M835/935 Shotguns have a laser etched constriction on the side to allow for improved reference. This Carlson's M835/935 Choke Tube is guaranteed to improve your shots tightness and accuracy making it one of the best Carlson's Shotgun Chokes on the market. Specifications for Carlson's M835 and 935 Ulti-Mag Replacement Shotgun Flush Mounts 12 Gauge: Manufacturer: Carlson's Choke Tubes Color: Stainless Fabric/Material: 17-4 Stainless Steel Gauge: 12 Choke Tube System: Mossberg 835/935 Mossberg Model 835 Gun Make: Mossberg Quantity: 1 Additional Features: Non-Ported Country of Origin: USA Features of Carlson's 12 Gauge M835/935 Replacement Shotgun Flush Mount: Tightens the pattern of your shot Constriction is etched on the side Package Contents: Carlson's M835 and 935 Ulti-Mag 12 Gauge Replacement Shotgun Flush Mounts Carlson's Choke Tubes M835 / M935 Ulti-Mag Shotgun 12 Gauge Replacement Flush Mount Improved Cylinder 19953