| 摘要 |
The combination of a firearm and a device for aligning an adjustable sight element of an open sight or telescopic sight is disclosed. The combination includes a firearm having a longitudinally extending barrel, a bore extending through the barrel and a longitudinally extending optical axis extending through the bore and an open or telescopic sight with an adjustment mechanism on the barrel of the firearm. The combination also includes a generally bullet shaped device having a metal body including a forward cylindrical portion and a rear cylindrical portion with a larger diameter than the forward portion abutting the forward portion as well as a laser pointer and battery powering the laser pointer disposed in the rear cylindrical portion and wherein the forward cylindrical portion is constructed and dimensioned to slidingly fit within a rear portion of the bore so that the laser pointer projects the light beam through the barrel and along the longitudinal axis and out of said barrel to thereby form a light spot on a distant target. Then the open or telescopic sight can be aligned with the light spot to thereby zero the firearm. In a preferred embodiment of the invention the laser pointer includes a red/orange diode to produce a laser beam with an output power of no greater than 1 milliwatt and a wavelength of about 635 nanometers.
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