my rear site will not stay set

[JHC-II]

I have a springfield 1911A1 with trijicon rear site. The rear set screw keeps wobbling loose any sugestions to set this in tight?

Cheers

 

[stevebc]

Assuming the threads aren't totally stripped, Locktite Blue:

http://www.loctiteproducts.com/products/detail.asp?catid=10&subid=48&plid=153

I used this on the screws that hold the foresight on my Ruger, it's still holding strong.

 

[G37]

I will also suggest that you dimple the sight with a punch to add to the resistance of the fit. Definitely use locktite blue as well (not red since heat is required to remove them... heat + tritium viles do not mix well (speakin from experience))