Your AR rifle is not complete without a HIVIZ AR sight. The nearly indestructible AR2008 comes with interchangeable LitePipes in both green and red for extra customization, and features a detent plunger to tighten engagement and prevent any side-to-side movement of the sight. Sight Post: 0.164". Fits AR and M4 rifles with A-Frame or folding front sights, including both fixed and detachable sights. LitePipe Colors: Green (2), Red (2) Post Length: 0.800". Post Width: 0.354". Post Height: 0.354".