This HiViz LiteWave Interchangeable sight set has a front sight which features the latest LiteWave technology for bright, reliable target acquistion. The rear sight was carefully designed around the original Ruger design and is both foldable and adjustable for elevation. Both the front and the rear sight feature interchangeable LitePipes. This set is compatible with your Ruger Ruger 10/22 Standard rifles with 18.5 barrel, Carbine & Takedown models. LitePipe Colors:Front: Green, Red, WhiteRear: Green, Red. Front Sight Length: 0.750″. Front Sight Width: 0.345″. Front Sight Height” 0.508″. Rear Sight Length: 0.375″. Rear Sight Width: 0.780″. Rear Sight Height: 0.537″.