Carlson’s Flush Mounted Choke Tubes are available for most shotgun models and serve as a perfect replacement to damaged worn out or misplaced factory flush mounted choke tubes. Carlson’s Flush Mounted Choke Tubes are manufactured from corrosion resistant 17-4 PH Stainless Steel they are compatible with steel or lead shot (Steel shot should not be used in any Turkey Choke Tube) and are backed with a lifetime warranty.