Pre cursor: I bought my M&P 9c when this particular store was running a promotion "free Trijicon night sights with M&P purchase."
I was a different (local) gun store today trying to get my DCAEK kit installed in my M&P 9c. The store said that they could not install the system because when I bought the M&P the store that I bought it from used Loctite on the new sights, and they could not get the screw out. Well the gunsmith at Gander Mountain could, and installed the system.
The GM gun smith was angry that the store used Loctite, and did not use Loctite when he re-installed those night sights after the DCAEK kit install. Now, the original store that sold me the gun is HIGHLY regarded in firearms. I have bought all my guns from them, and I know many of them very well. When I talked to them they stated they use Loctite because sometimes the rear sight falls out/
Question: How many are aware of Loctite on their sights? Is this lack of Loctite on my rear sight now going to really cause it to fall off? Not to say that I'm wary of the sight now, but it does make me go hmmmmmm.