Bore Sight 9mm Green Laser Boresighter with 12 Batteries | High Accuracy, Bright and Clear Green 9mm Bore Sight Laser

If you’re zeroing a red dot, these are definitely worth having. I checked to make sure the laser was properly centered before using it, and it was spot on, which gave me confidence during the zeroing process. It made getting on paper much quicker and saved both time and ammunition at the range. My only real complaint is the battery life—it doesn’t last very long, so I’d recommend keeping a few spare batteries in your range bag. Other than that, it’s an excellent tool and has worked exactly as expected.

Works great. Easy to use. Batteries are very small so make sure to hold them tight so you don’t drop them! You’ll never find them. Great product

works just fine

Easy to load into the chamber (Glock 45 5th) (though may need to remove with wooden tool). Used it to calibrate my red spot targeting laser - highly accurate - easy to calibrate. The green laser easier to use when calibrating red laser. Easy instructions on inserting battery and using the boresighter.

Works as intended, accurate, tons of extra batteries, bright, good value, easy to use. My only complaint is the device does not eject, and gets stuck easily. I have tried with my PDP F Pro, Hellcat Pro and MP Shield Plus. I have to shake lose and tap on the slide of the gun. Other than that, I'm on paper with it.

works great !!

fits great, no wiggle, bright green laser easy to see when calibrating optics and mounted lasers.

I’ve had some bad experiences in the past using red laser ones but this one did a VERY good job as the laser was green making it visible to me adjusting my red micro dot Osight s. It made adjusting the o sight on top of my CZ P-09 Nocturne Compact very fast indoors. I took out my magazine and unloaded the chamber of my P09 nocturne compact.. I then took the laser casing batteries installed (laser on) and loaded it in through the ejector port and then seated it in the chamber. I racked it back 2-3x lightly to ensure the laser was seated where it needed to be… I then went to one edge of my house and pointed the laser in the cz towards the 20 yard wall in my living room. This then allowed me to adjust my micro dot so it was sitting on top of the green laser exiting the barrel. One way to really ensure it’s on top of the laser if it’s a different color than your optic reticle.. is to look through the optic at the laser point onto the wall.. while watching cover the barrel to stop the green laser while covering it and uncovering it to really see where the optic is in regards to the laser. Once it is close enough and on the optic reticle center … that’s the best you can do until you go to the range where I will make micro adjustments to the optic based on what my bench vice shots are doing on paper: I have no doubt it will be very close and need minor adjustments.