Provides a secure cover for great lense protection. Mounted easily with provided adapter. Thankfully, Milehigh recommended a 1.5 high Sphur mount, because the lip of the cap has just clears the picatinny rail of my AICS. I think they should modify the cap with a notch to allow the scope to be mounted lower. I have a Premier Reticle scope that has this factory modification and it improves mounting.