Tacstar's shotgun rail mount with sidesaddle is ultra-rigid, lightweight and straddles both sides of the receiver.It is constructed of aluminum with a non-glare anodized finish.The top picatinny rail can mount a variety of accessories, yet is designed to sit just high enough to allow continued use of the shotgun's bead sight.Keeping six shells in readiness, the low profile design sidesaddle incorporates tacstar's proprietary material for durability and secure shell retention.This model is compatible with mossberg 930.Finish: Black Hardcoat AnodizedType: Saddle MountModel: Shotgun Rail MountDimensions: 1-PieceMaterial: AluminumAction: AluminumTrigger: 1Safety: Shotgun