FSI Bore Sight 243 308/223 5.56mm/6.5 Creedmoor/7.62x39/30-30/30-06 Red Laser Boresighter Batteries

If youre saying its too dimz its because youre tring to use it in broad daylight on a clear day. Wait for the sun to set a little, then use it to sight in your scope or rail mounted laser or whatever. If its still too dim, return it for a replacement.Dont try to eject this like a normal cartridge, it isnt. Hold your ar 15 ejection port down, pull back the bolt, and it should fall out.With that out of the way, maybe i was a little impatient, but i dont know how to turn this thing off, so i just pulled the batteries out when i was done

Fits snug in the chamber and emits a bright red laser beam that can help you accurately zero your sights.

Bought this to zero in my optic and worked well "when needed" in thr beginning but for some reason now batteries only last like 5 seconds "even new batteries" so its oretty much useless!

Tested this out today and was disappointed. I was excited to use it to sight in a new scope. Tried using it outdoors at 25 yards, but sun kills the laser after about 5-10 yards. Will try again on an indoor range, but manage your expectations accordingly.

I'm not sure what the point of a Laser bore sighter is if the Laser doesn't work.

Jammed my rifle. Had to pry open the BCG with a screwdriver. Ultra dim laser that could be seen if your hand was directly in front of the barrel. The laser would disappear just three feet away from the barrel.

Easy to use, saves ammo, however the batteries provided don't last very long.