|Type: Picatinny Weaver Dovetail Rings|
Rail Type : Picatinny Weaver Dovetail
Ring Diameter: 25.4mm/30mm
Length: 139mm Pieces: 1
With built-in bubble level
Features: Extra Picatinny Weaver Tri-RailThis precision-machined, aircraft-grade aluminum Angle Degree/Cosine Indicator (ADI/ACI) takes the guesswork out of uphill and downhill shots.The red needle moves with your rifle and displays a number that indicates the percent your rifle is off level.