Can't wait to take this thing out to the range and test it out.
It's a laser boresight. It's shaped like a bullet because you put it in the chamber of your gun (my ar-15 in this case), and it shines a laser out the end and onto the target.
In the olden days, to sight in a scope: Turn on red dot, shoot a group of three, bring the target back, calculate the MOA, click the sight adjustments a few times. Try again.
This thing, in theory, should allow me to: Put a laser dot on the target. Click the sight adjustments until the two dots line up. Done. I have high hopes.
edit: understanding that bullet physics are different than laser physics, so I realize it won't be *quite* that simple.