I could not be much happier with this Red Dot Sight. I've had it for a little more than 2 months now and it has been excellent! The rear cover will spin if forced but does not come off. The dials require little effort to adjust and the battery compartment is easy to get to. Attaching the sight is also very simple. Note that the sight comes with extra rail space on both sides of the cylinder for a small laser or flashlight. All in all, you are getting a 75 dollar red/green dot sight for 45 and it looks sharp!
Easy of use
Extra rail space
Rear cover is the tiniest bit loose but doesn't come off. Not something that bothers me, I'm just being critical here.
Rating: [5 of 5 Stars!]