I recently purchased a rifle and this eotech was once mounted on it. The previous owner says the rifle and optic we’re rarely used, and I imagine him based on the condition of the rifle and the sight. The optic is in great condition, plus these things are built like tanks. The Eotech xsp3-4 is likely one of the higher end eotech’s in the line up. I’m truly impressed with this optic but I prefer the one dot eotech reticle vs the four dot that may be used in this model because I don’t shoot at distance continuously; so, I do not need much use for four dots. Then again, the idea that of with the ability to use the optic for close quarter combat and for shooting long distances is a great idea that this model accomplishes well.