RARE Sharps Model 1859-63 & Spencer 1860-65 Rear Sight Ladder Screw for Carbine or Rifle. as well as most military sights produced after the Civil War. This screw prevents the slide from coming off the sight leaf.
Use on Sharps/ spencer Sight ladder (ORI-179) to keep slide on ladder
Note: These are original parts and may not fit all reproductions. No returns.