|Deluxe Custom design 3/8in dovetail rail with 'V' site rail with attached Beavertail. Black anodized aluminum. Fits Rear cocking Spyders. No attachment screw included. Fits most Rear Cocking Spyder models: 2000, Agressor, Aggressor XT, E-99, Espirit, Flash, Flash LCD, Rodeo (does NOT fit all versions), Shutter, TL, etc. 3.75 inch long sight rail. 6.5 inch long overall. 2.2 oz. NOTE: May NOT fit all versions as stock push pin may not give enough clearance to sit correctly.