The Independence Mount is a forward offset 30mm ring mount for rifles using flat-top 1913 MIL-STD Picatinny rails. Centerline height is 1.5" above the receiver. The cantilever offset allows for your scope to be mounted in a forward position, maximizing both your head position and eye relief on AR platforms. It is tough and sturdy, built to lock your scope down and eradicate any movement or wobble between both the mount and rail, and the mount and rings. Independence Mount is a solid, honest mount that gets the job done and won't break the bank. Mfg: Swampfox Optics