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Old February 28, 2020, 03:45 PM   #1
DrMLap
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RDS Keeps Getting Loose

I have installed an RDS on my S&W TRR8. After a few hundred rounds, it loosens to the point where it forms a small amount of forward/backward play on the rail. And, yes, I have used Blue Loctite on the clamp screw. Looks like all that does is delay the loosening.
Does anyone have a more permanent fix for this? One that still allows me to remove my RDS when I want to?
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Old February 28, 2020, 03:57 PM   #2
zoomie
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What RDS and what mount?
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Old February 28, 2020, 04:10 PM   #3
DrMLap
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Quote:
Originally Posted by zoomie View Post
What RDS and what mount?
I'm using a Vortex Venom and the standard integral clamp that comes with it.
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Old February 28, 2020, 04:39 PM   #4
Unclenick
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You can read up on Loctite here. You want to use a solvent to completely degrease before applying it. If you aren't using a primer, you want to get the primerless grade.
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Old February 28, 2020, 04:47 PM   #5
zoomie
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The issue is the mount to the rail, right? Not the sight to the mount?

I'd either call Vortex for a new mount or just get a better one.

ADM is good stuff.
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Old March 1, 2020, 06:00 PM   #6
SGW Gunsmith
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Quote:
Originally Posted by DrMLap View Post
I have installed an RDS on my S&W TRR8. After a few hundred rounds, it loosens to the point where it forms a small amount of forward/backward play on the rail. And, yes, I have used Blue Loctite on the clamp screw. Looks like all that does is delay the loosening.
Does anyone have a more permanent fix for this? One that still allows me to remove my RDS when I want to?
Geeez! I hate when that happens. As of 12, or so, years ago, you will NEVER, ever, find a slotted or hex socket optics base, or scope ring screw, on or within 500 miles of either of my main work benches.
I have gone over from the "dark side" and now use nothing other than torx screws for optics mounting to ANY degree. Even for Ruger Mark pistol front sights that are notorious for loosening up. My instructions are quite elaborate so pay close attention:

Clean the torx screws with a spray cleaner like "parts and brake spray stuff" and then a drop or two of #242 Blue Loctite. That screw will be tighter than a ducks bunghole, yet still serviceable with hand tools.
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