It's sticky enough when you put it on but you can lift it and reposition it as much as you want to. You use a hair dryer to soften it a bit for final fit and that activates the adhesive also. If you go on the site I linked, check out the installation videos. It was a pain getting it to lay flat with all the lumps and bumps on the receiver but I just took my time.They say you can remove it at any time with no adhesive left behind and the edges seem to really be on there at least for now. I'll let you guys know how it holds up during hunting season.
Yeah, I like how compact the scope is for the AR. So far it's holding up to the 450 fine, I know Barska has the reputation for being a cheap scope. I'll let y'all know how it holds up as well .