CVLIFE Professional Laser Bore Sight Kit with 32 Adapters fit 0.17 to 12GA Calibers, Red or Green Bright Bore Sighter Laser with Button Switch, Powerful Support for Hunting

Easy to use and does a good job. Good price too.

I have now used this several times on multiple pistols and I am pretty happy with it. It is consistent, fairly true (rotating it in the barrel does not change the dot's location) and would seem to work as desired based on what I am seeing at the range. It is fairly inexpensive so weak QA may be why some have not had as good as an experience, but that is just a guess. I think you do need to be a little careful about how you fit it to the caliber you are using. I take the largest insert that will fit in the barrel and just loosely screw it onto the bore sight, slide it as far is it will go into the barrel and then rotate the bore sight clockwise to tighten it up and fit snugly against the barrel crown. Your mileage may vary, but I have no complaints with it.

Checked a couple Red Dot sights using this bore sighter kit and everything worked as it should. It seems to be built well and had a large amount of bore adaptors. The instruction book could have been a little more informative. It came with an Allen wrench and there are Allen screws in the device but no instructions on what it does. Overall, it appears to be a good product.

This is an excellent product and well thought out. Don't make the mistake that I made and buy one of the other bands that looks the same and is a few dollars less. This product is far superior and is much easier to use and will provide you with better results. Ammo saved. Thanks for a great product.

CVLife did a solid with this one. Bought two and worth every penny! Easy to sight in and the laser works extremely well. Nice and bright.

Got this to pre-zero my DDRM4 offset iron sights and eventually zero-ish a new scope i have otw. My iron sights should now be good to 30-35 yards. Close enuf to take to the range for a final 50yd zeroing. They were way off when i tried zeroing them at the range. E.g. too far off to see the hole at 50 yrds for the first few shots.I also checked it out with my current scope out to around 100yds. My scope's already zeroed and the green dot was very easy to see on a tree at just over 100yds away. Spot on. I took it off and put it back on several times. It maintained its position. Very nice.When my new scope comes in i'm confident i can zero it using the same tree and be good to go.There are way more fittings than i'll ever need, but it's still cheaper than getting one for each. Quick to set up, fits snugly. Worth the investment.

Works great and it bright enough to see in the daylight. Makes the sighting in easy.

Really well presented kit. It appear to fit everything. But not labeled easily to read. I haven't tried sighting with optics yet but it worked very well with iron sights at 35 yards