Burris SpeedBead Mount Features: The unique SpeedBead Mount makes it easy to add a FastFire red dot sight to your shotgun. It s ideal for clays and for hunting waterfowl upland birds and turkeys. Burris SpeedBead Mount Specifications: Compatible with many popular shotguns All SpeedBead Mounts are compatible with all FastFire red dot sight models Mounts the optic between the stock and receiver with 2 screws Low mounting system means your line of sight falls just above the vented rib Allows for accurate and instinctive aiming Backed by the unconditional Burris Forever Warranty FastFire optics sold separately except as noted in SpeedBead Systems Fits: Winchester XS3/Browning Gold 12 ga.