| 摘要 |
A firearm sighting aid, which includes a planar block of lightweight material, the planar block forming a three-dimensional shape defined by at least a width, a height and a thickness and forming a planar support base, a planar first side and a planar second side, the planar block of material also defining a substantially cylindrical passageway sized and configured to receive at least a portion of a firearm barrel, the cylindrical passageway extending through the planar block between openings at each of the planar first side and planar second side, respectively, and along a longitudinal center axis which is substantially parallel to and offset from a plane occupied by the planar support base.
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