VORTEX Defender Objective Flip Up Cap Diameter:40mm The double internal spring-tension system

The double internal spring-tension system allows the scope to hold zero through shock

and a grippy rubber buttpad anchors the rifle at the rear

Shooters around the world will appreciate the accuracy and extreme long range performance of Sierra's 7mm 183 grain HPBT #1983

BLADE-TYPE EJECTOR for full control of ejection force

VORTEX Defender Objective Flip Up Cap Diameter:40mm The double internal spring-tension systemThis 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. Objective 24 Fits: Weight17 grams 0. 6 oz Outside Diameter (inches)1. 1 1. 2 inches Outside Diameter (mm)28. 25 31. 25 mm