O-24 Vortex Optics Defender Flip Cap Objective 24 This is the last flip cap you will ever need! Virtually indestructible, this cap will fit snugly on nearly all Vortex Optics® and features a snap flat spring that will keep your line of sight unobstructed. Specifications: Weight 0.6 oz Outside Diameter (inches) 1.1 - 1.2 inches Outside Diameter (mm) 28.25-31.25 mm
