M1 Rear Sight Problem

[USGI]

Frank: Use the loctite. Clean the metal as best you can with a good solvent like brake cleaner or gun scrubber to remove all the oil, otherwise the loctite won't hold. I did one on an Inland about 10 years ago with red loctite and it's never come loose. The red is higher strength than the blue. I used the red (#271) just because I had some on hand and knew I could remove the sight if ever needed by using a heat gun and a little extra force. - Bob