Sniper's Crossbow in Heroes 4

Increases the hero's Ranged Attack by 3, and negates all range penalties. All friendly creatures also have no range penalties.

A master smith named Gunnar made several improvements on the design of the crossbow. One notorious model soon became popular with assassin's due to its amazing accuracy at long ranges. So popular, in fact, that people started calling it the Sniper's Crossbow.