I noticed that after my last range trip my rail had loose. Has anyone else had this happen with the Troy TRX extreme rail? There had been slightly over 1000 rounds through the rifle since it was installed. For those of you with higher round counts, how is the rail holding up?
Did you lock tight the screws?
Yes, blue.
Had the Loc-tite broken loose? Were the screws backing out at all?
You should have used red. Blue can soften up if it gets too hot.
It did not appear that the screws had moved. I tightened it to the width in the instruction sheet. When I checked it after it came loose it was still the same. Maybe it was never tight enough to begin with. I am going to clean the threads up before I re-install it anyway.
That’s interesting. I would like to hear how secure it remains after you reinstall it. Keep us posted please.
Will use red this time. The temperature difference between the two isn’t that big though, is it?
I don’t know if I would use red. Red takes like 500° of heat to remove. I might try Rocksett instead of red Loctite. Based on what I’ve read, it’s about as easy to break loose as blue Loctite, but it can withstand much higher temps.
Honestly I would probably try blue Loctite again. Since you say the screws don’t appear to have moved, make sure the rail is seated properly and screw it back on. Put witness marks on the screws and see if it comes loose again. You can always put red Loctite or Rocksett or whatever on it if it comes loose again.
I’ve had them loosen after 1st install a couple of times.
- What I’m doing now is installing them tight.
- Loosen the rail and remove it from the bbl nut completely.
- Reinstall again and tighten them down well. Loosen it up again and completely remove the rail and the screws and them blue Loc-tite the screws and reinstall everything.
This seems to work. I don’t know why they loosen if you don’t do this I think maybe the heli-coils for the screws stretch or the rail needs to form itself to the barrel nut or something.
I had the same problem and did exactly what Robb did. It appears to be fine now. Definitely, don’t use Red loc-tite. Stick with Blue or rock-set if that’s your flavor. There’s no way a rail is going to get 500 degrees anyway, unless you’re doing something wayyyy out of the ordinarily 
Blue lock tight is good to 300 and red to 500. I had blue loosen up on me when I was using a MI FSB light mount once, so now I use red on anything near the barrel. Hopefully mine will not come loose or I will have to torch it to get it off. I did not know there was a problem with the Troy’s coming loose.
I wish I saw this thread yesterday as I just ordered this rail for my sbr. I hope I don’t regret it.
Dont think you will , this sounds like an isolated incident. Ive heard nothing but good things. Oddly i too want one for a SBR build.
Yeah, don’t lose faith until it truly fails on you. There have been plenty of people that don’t have this problem. You’ll more than likely be problem free. Worse comes to worse, Troy has amazing customer service. I got shipped with the VTAC rails instead of the TRX and Troy sent me the TRX rails, no questions ask.
Good to know…I’ll keep a close eye on mine. Its already been on and off the rifle a few times so hopefully that will take care of it.
I am running the TRX and love it. Never had an issue.
When applying loctite, always make sure to degrease the screws AND the nut.
C4
This really sounds a lot like what happens with aluminum rims and steel lug nuts on a car. The heat build up that occurs from the hub and brakes will cause the two to expand differently and become lose…they will need to be re-torqued in a day or two or you take a high risk of having the lugs work themselves off. The install and reinstall method that has been talked about reinforces this theory. You have aluminum rails and steel screws… I believe. I think that if you were to run a few hundred rounds through a rifle and let the heat cycle run its course a few times and then remove and blue loctite the reinstall you would be good to go.
Good to know fellas, thanks.
I appreciate the advise Grant; I’ll make sure I do it like that.
i ran an 11" in 2009-2010 with absolutely no problems. the trx extreme is, by far, my favorite rail. when i get around to doing another build, i plan on going with a 13".