Either setup will require storage space on your rig if dismounted from the rifle, but flip-to-side can remain mounted but out of the sighting plane until needed, and change of position is instantaneous. Don't know from what you're starting, or your budget, but another great alternative - also from Botach - is the EOTech XPS2 holosight *and* 3X magnifier with flip-mount for $904. That's the setup I have, and it just flat works. Thomas Wanna kill these ads? We can help!