UTG Tactical Front Sight for Mossberg 12ga Shotgun & Variant UTG New Gen Tactical Front Sight Assembly for Mossberg 12ga Shotguns and Other Variants Compatible with Barrels with Standard Front Bead and No Vent Rib Elevation Adjustable Front Sight, Further Supported by Zero Locking Screw for Precision Shooting Complete with Front Sight Assembly, One Piece, Dual Purpose Steel Adjustment Tool and 3mm Allen Wrench Perfectly Co-witnesses with UTG New Gen Universal Sub-Compact Rear Sight MNT-910 Providing Extended Sight Radius and Superior Target Acquisition Fits Barrel Diameter: 22mm UTG New Gen Tactical Front Sight Assembly for Mossberg 12ga Shotguns and Other Variants Compatible with Barrels with Standard Front Bead and No Vent Rib Elevation Adjustable Front Sight, Further Supported by Zero Locking Screw for Precision Shooting Complete with Front Sight Assembly, One Piece, Dual Purpose Steel Adjustment Tool and 3mm Allen Wrench Perfectly Co-witnesses with UTG New Gen Universal Sub-Compact Rear Sight MNT-910 Providing Extended Sight Radius and Superior Target Acquisition