Strike Industries JCOMP2308 JComp Gen 2 Black Steel w/ 5/8"-24 tpi Threads 2.55" OAL 0.87" Diameter 0.34" Diameter 308 Win 7.62x51mm NATO Fits AR-Platform $39.95
Leupold 62990 Alumina Cover Kit Matte Black Aluminum 40mm Obj. Size Standard Eyepiece Slip On $179.99
Leupold 62995 Alumina Cover Kit Matte Black Aluminum 50mm Obj. Size Standard Eyepiece Slip On $189.99