PDA

View Full Version : Question with DSA Para lower rear sight


ghf
January 30, 2009, 14:57
Have a DSA para lower w/ para rear sight.

The left and right screws that one uses to adjust the windage recurrently come "slightly" loose after shooting.

I normally check the screws after shooting and tighten the two screws- and then I ck the zero again to insure that I didnt move the windage.

To tell the truth, I have never noticed the windage shift when the screws are loose. However, (rightly or wrongly), I'm concerned.

Several questions-
1- Is it "acceptable" for the screws to be slightly loose?
2- Will slightly loose screws cause a shift in windage or is there some other mechanism in the sight that keeps the windage from shifting?
3- Would it be OK to use medium Lock Tite to lock the sight in place?

thank you for any feedback.

kotengu
January 30, 2009, 15:27
The screws should stay tight - the opposing torque/stretch should keep them that way. Your windage definitely could shift if they back out too much. It wouldn't hurt to use locktite, but make sure you can get them back out when you need to!

You might checkout a Belgian rear sight. they had a z-spring underneath and nubs under the screw heads. It was supposed to be for click adjustable windage. I've never had much luck with that, but it does help keep them from backing out.

ghf
January 30, 2009, 22:03
Kotengu, thank you.