9mm TPO Red Dot Boresighter with 6 Batteries - Perfect for Pistol & Rifle Zeroing, Hunting, and Shooting Range Practice

Works as described, gets the job done.It works the way it said it would.It got here several days before I expected to. It was quick and easy to setup and use. It helped me to zero in the laser on my Glock. Now I can actually hit the bullseye. I'm very satisfied the quality of the product service will buy from this seller again.Works great! Bright and accurate. Helped me zero my 2 red dots without wasting ammo.I bought this a year ago and I was expecting to have my 9mm pistol back from the gunsmith soon after, but I wound up having some other work done and didn't get around to sighting in my red dot until this week.So I popped in fresh batteries to my red laser so I could use it at the range, and wouldn't you know, the laser deader than disco. The light is misaligned, and does not shine outside the brass housing.It's far too late to get a refund, but you should know that these are not well manufactured. Some are fine, some are not, and you need to know that you stand pretty good odds of getting one that's junk, and when you do, you'll need to get the return started inside the deadline because otherwise you're throwing away your money.I was trusting. That was my mistake.Easy to use. Easy to install. Just no on/off so you have to remove the batteries.