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Posted: 4/23/2011 4:44:43 PM EDT
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I was shooting this weekend, when I noticed my ARMS #40 was about to fall off. Which is my fault, not the sight. I keep it in folded position so I didn't notice it was coming loose. Honestly, I probably didn't torque the nut down when I first installed it. I rarely use it, even though it is my favorite BUIS.
I found the cross bolt, and the clamp, but I am missing the nut. I am not sure how hard that will be to come by. Any advise in that department will help. I just emailed ARMS and look forward to their response. I tried finding it with a magnet to no avail. What is the steel cable looking thing in the picture below? What is it's function? I don't remember seeing it on my ARMS #40, and it isn't present now. I am not sure if something else fell off. |
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Same thing happened to me years ago. Loctite 242 fixed the problem. I hate to use locktite, I have it on a 9mm AR currently, but I don't know that I want it to stay there. I might move it to another AR later on. Just one drop of loctite is needed... dont go crazy...it can still be taken off if needed, just add a little heat. with the cable is used on newer sights precisely to prevent the loss of the nut... I prefer the ones without the cable for clones I am building. |
| Just thought I'd mention that I have two of these ARMS #40 backup iron sites. My older one does not have the little retention cable you mentioned, but a new one I just recently bought for one of my rifles does have it. Looks like something they added with a product update at some point. |
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Just thought I'd mention that I have two of these ARMS #40 backup iron sites. My older one does not have the little retention cable you mentioned, but a new one I just recently bought for one of my rifles does have it. Looks like something they added with a product update at some point. Welcome to the forum. That is the same impression I just came under. |
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they added that cable in the 2006/2007 timeframe your ARMS BUIS should have come with purple loctite, . Not that I remember. It has been a long while though. i had three ARMS #40s and they all came with some weird triangular white vial of purple loctite, maybe they stopped doing it... go with the blue |
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