Bemodst Red Measuring Sight, Gauge, Sight Hole Kit for 17 to. 78 Caliber Shotguns, Equipped with 7 interchangeable connectors (0.17-0.78)

It feels robust and good quality but doesn’t turn on??

Took it apart to see if the batteries were faulty got some new ones didn't work .struggled to screw it back on , didn't feel like it was connecting properly . Waste of money ?

When I first got the item as mentioned in the reviews the instructions was a little vague but soon worked it out I used the item to set up my air pistol and my pcp air rifle I got to say I was impressed at the accuracy would definitely recommend but would say if your not using the item for a while it’s best to remove the batteries I have left a picture to show how the batteries fit in the unit but altogether a spot on unit

I took a punt on this as had read a few reviews saying they had to send it back. When first setup I thought I'd made a mistake and would also be in that camp, but I had another look at the 'Chinglish' instructions and worked it out.It's not clear from the picture how the battery pack goes into the unit.The battery's go in the little plastic tube negative side first and the whole plastic tube slides into the unit with the closed end (with the small metal contact pin sticking out) first. Then the large spring goes onto the top of the plastic tube so that the larger diameter end sits on the plastic tube (not the batteries) and the small end locates into the laser section. The laser section then screws down into the body to make contact with the batteries. Once I got this setup correct the laser lit up and works well. There's no on/off, you just screw in the unit to turn on and then unscrew to turn off.My airguns are generally all 0.177 and it fits nicely down. Rotate the unit to get the little insert to 'lock' in place and stop it falling out the barrel. I set up red dot sights and scopes using this and it worked really well. Nice to have with the gun if changing distances so you can sight in without needing to make test shots first.Also good for checking fixed sights on things like replica pistols etc to see if you need to adjust your aim slightly.As usual, remember to remove it before you take a shot - been done before and will be done again.Overall a nice little boresight and just knocked a star off for the poor instructions to setup - I think a few will have sent back thinking it was broken but just needed to find the correct battery installation.

Has absolutely no laser strength to bore sight beyond the end of your nose. Don’t waste your money on this very cheap laser.

Needs instructions I tested the batteries, ok, ran conduction tests, every thing passed, bloody battery spring in the wrong place! Works fine now, used the item pics on Amazon to get the right order of everything

I liked this product because it was super easy to setup and use.It made Zeroing my scope dead easy.Didn’t have to waste any ammo walking the scope in either.Although I only needed it for my .22LR Rifle it Comes with enough different calibre grips to use it on anything else I might purchase in future.The build quality is solid and feels like it’s well made.Well worth having in your gun care kit.

i used this for what it is designed for