870 Sights..

[troyboy94]

I have an 870 and the rear sight wont tighten. It slides back and forth and I dont know whats wrong with it. I took it apart and everything looked fine but if someone could please help!

 

[Fred Fuller]

Current 870 rifle type rear sights have three main components, two of which are secured by screws. First is a dovetailed ramp, which is silver soldered to the barrel. Attached to that by a cross screw is a small block which fits onto the inclined top surface of the ramp and clamps into place by the action of the cross screw. This allows for elevation adjustment of the rear sight.

Attached to this small elevation block with a small vertical screw is the rear sight blade, which is adjustable for windage.

Sounds as if your elevation block cross screw is either missing, stripped or damaged... or for some reason not doing its job.

lpl

 

[troyboy94]

bump

 

[proud2deviate]

I had a problem with my rear sight walking around (actually, sliding on the ramp.) That ticked me off; sent seven slugs downrange with zero results before I figured it out.

I seem to remember I fixed it by Loc Tite-ing the heck out of the screw, and then torquing it in as fiercely as I could without stripping it out. Hasn't come loose since.