Best magnifier at this price handsdown - Sightmark 3x Tactical Magnifier - Slide-to-Side SM19024

If you're on the fence about if you should get this or not because money is an issue and it's still pushing $100...get it, for the money this is amazing. It lines up perfect with other sightmark sights(obviously) but also others(granted I've only tested it with sightmark and burris). When in the "active" position it's solid and clear, when slid to the side people have complained it has some wiggle...they are right; HOWEVER I've found that it's only noticeable if you physically wiggle it with your hand or if your are running, but neither affect how solid it is in an active position. I don't know if I would go into combat with it because of the wiggle when running, but for civilian use it's perfect. Like I said, if you are on the fence, get it you won't regret it; I didn't.