Rear-sight for a weapon

For use in a gun or the like having a front sight extending upwardly from a top side of the gun near the front thereof, a rear sight alignable with the front sight and supportable by first and second spaced apart ears extending upwardly from the gun near the rear end thereof, said rear sight comprising:

• an elongated bolt-like element having a head and a substantially cylindrical body extending from said head, the ears of the gun having openings through which said substantially cylindrical body is insertable and alignable to be substantially parallel with the top side of the gun,
• The length of said substantially cylindrical body from said head to an opposite end thereof being greater than the distance between the outer sides of the ears, whereby the opposite end of said substantially cylindrical body extends through and out from a second one of the ears, and a portion of said substantially cylindrical body adjacent said head extends through and out from a first one of the ears when said cylindrical body is inserted into the openings of the ears.
• said substantially cylindrical body having a first unthreaded portion extending a specific distance from said head and having a specific diameter, which is smaller than a diameter of said first one of the ears, whereby said substantially cylindrical body is insertable therethrough to extend to said second one of the ears, and a second threaded cylindrical portion extending from said first cylindrical portion to the end of said cylindrical body, with the opening of the second one of the ears being threaded to receive said second cylindrical portion therethrough,
• a radial recess formed in said first cylindrical portion at a predetermined distance from said head and having a predeterminded shape, and
• a locking nut adapted to threadably engage the part of said second cylindrical portion extending beyond the second ear.