It is the Axcel sight...and it does function absolutly flawlessly as marketing. 2nd and 3rd is easily setup. It also come with threaded barrel and non threaded barred to fit your need to attach other brand scope. No backlash in the click, the locking feature is solid, no matter how vibration your bow has, it will not mess up with your sight. UHM Carbon bar made a huge different in vibration dampening in comparison to older alumimium version (of course carbon hold its straightness longer)