F Butler Creek Multi-Flex Flip-Open Eyepiece Lens Covers - Eyepiece Lens Cover #19,20 1.73-1.775" (43.9-45.1mm) $8.99 21920 show more like this $12.50 Brownells F Butler Creek 21920 F-O Scope Cover EYE 19-20 Black $8.99 21920 show more like this 3.82 GrabAGun.com F Butler Creek Multiflex 19-20 Eye Cover $10.45 21920 show more like this Calculated in Cart Primary Arms