[r9etb]

We need a laser beam that bends to simulate the trajectory of the bullet.

Actually, it'd be pretty easy to get the same effect with a two-beam laser sight. The first beam would be a laser range finder (IR, or very short pulse, so as not to be visible).

The second beam would be visible, and its direction would be adjusted based on the range.

[Paladin2]

"Actually, it'd be pretty easy to get the same effect with a two-beam laser sight."

What if you hold your gun sideways?