Patent ID: 7188446

Claim:
A system for adjusting the front sight of a muzzle discharging barrel having a longitudinal dimension along which a projectile travels, the system comprising: a front sighting device having a plurality of sight lands arranged in a progression for incrementally varying the elevation settings, the sight lands are arranged on a periphery of a sight blade that is pivotally mounted on a sight base; an adjustment mechanism for moving the plurality of sight lands about an axis transverse to the longitudinal dimension through an operative position for sighting-in the front sight at different elevation settings, the adjustment mechanism adjustable in two directions and the progression of sight lands arranged for incrementally increasing the elevation settings in one of the two directions and for incrementally decreasing the elevation settings in the other of the two directions; and a catch biasing the sight blade into discrete angular positions at which individual sight lands are operatively positioned for sighting, the sight blade supported on a rotatable body having indexing features associated with each of the sight lands, the catch is relatively biased into engagement with individual indexing features for holding the sight blade at the discrete angular positions, and the adjustment mechanism pivots the sight blade in the two directions for increasing and decreasing the elevation settings.