7.62x39mm Bore Sight, Red Dot Boresighters | Three Batteries, 15-100 yards, for Zeroing Hunting Shooting

The laser of this red dot got us on paper to allow us to finish the fine-tune our regular sighting system. Super easy to use as it is chambered & is the same size as a regular cartridge. The brightness of the dot worked as advertised and laser accuracy worked perfectly for us. Durability was also fine.

Very bright! Worked perfectly 👌

So first off let me start by saying these aren’t meant to actually zero your firearm. They just make the sights and bore line up a lot closer before you start actually zeroing to save you some time. Never used one of these besides the army. Which we used in basic to make sure privates that never shot anything in their entire life didn’t take 5 hours trying to just get on paper. Anyhow, the quality was actually surprising. It feels like it’s made well and has a good weight to it. Bolt won’t close completely but it’s close enough, not meant for a perfect zero anyway. And the light is bright and pretty clear. Only real downside is there isn’t a on/off button so you have to remove the batteries and not lose them for next time but at the same time it’s supposed to be a snug fit into the bore to ensure it’s a close to the boresight that it can get so idk where they would put a power button. Does what it’s supposed to do which isn’t a dead on zero. As long as you know that, this will save you range time after putting on new sights.

One of the best purchases ever. I was able to sight in my rifle in less than a minute

Gets you within a few inches, I used it to aim at something about 20 yards away. I marked the back with a marker and rotated it, and looked through a scope a few times and it only moved 2-3 inches at the most. For $10 this is great value

I purchased this bore sight to get the AR I built close and adjust from there. This product worked great and it only took a few rounds to get it spot on. I would recommend as the idea way to sight in your rifle. The packaging isn't good for long term storage after opening so I would recommend using a small plastic bag to keep it around. Comes with the batteries which can be dropped right in, screw on the cap and chamber it. From there adjust your reticle to where you want to be. Please note that if you are sighting in for 50 or 100 yards you will want the laser dot low as this bore sight is for a closer range. If you are curious about why this is I would recommend looking up ballistics information on google.

So the body and battery cap all seem to be well built and actually fit the extractor on my BCA AR15 762x39 bolt face. However, it is not head spaced properly for an AR or an AK as I tested the headspace on my friends AK with this item. Once I chambered the item, without the magazine and riding the bolt forward gently, I got a clean bright laser that looked somewhat serviceable to help zero a red dot or holographic sight at 20 yards. I removed the item, checked to make sure my chamber was clean and clear of obstructions, then re inserted the item and gently let the bolt down onto it. Now the laser had a different point of aim. I short stroked the bolt letting the extractor grab it and reseat it, and the point of aim had changed again. Removed the item, tested it in an AK with new batteries and no laser at all. The light was on inside of the device, we could see the red glowing inside the front lense, but the laser pointer inside had been shifting around and going off course. After chambering it a few times on the extractor to see if I can knock it back to zero, the laser will not power on, even with newer batteries. TLDR: not headspaced for AR15 BCA BCG. Laser is inaccurate and wildly unreliable.

Good enough to get you close but not perfect. As others have said not a tight fit in the barrel, it’ll sit a little different every time you put it in, but it’s not complete garbage, it’ll get you close enough to finish sighting without it.