Installing Samson Star-C quad rail

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evan the cdn

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I'm putting a Samson quad rail onto a different upper and I am a total newb to working on AR's. When I pulled it off the first upper there was some oil between it and the barrel and also between the two parts of the rail. Should I reapply oil when I install it on the new upper or should i put it back together dry?

Here's a picture of what I'm talking about.

img1078kw0.jpg
 
Dont matter

evan the cdn said:
I'm putting a Samson quad rail onto a different upper and I am a total newb to working on AR's. When I pulled it off the first upper there was some oil between it and the barrel and also between the two parts of the rail. Should I reapply oil when I install it on the new upper or should i put it back together dry?

Here's a picture of what I'm talking about.

img1078kw0.jpg
Click to expand...

Up to you - anti seize compound on the threads is always a good idea -
 
You dont need to oil it up but if you do it wont hurt anything either, just a lightly oiled non linting rag keeps it nice and shiney too much oil and crap sticks all over it.

I use purple loctite 222, keeps everything tight but you can remove easily if needed.
 
OZZ said:
You dont need to oil it up but if you do it wont hurt anything either, just a lightly oiled non linting rag keeps it nice and shiney too much oil and crap sticks all over it.

I use purple loctite 222, keeps everything tight but you can remove easily if needed.
Click to expand...
I've never heard of purple loctite. I'll have to give that a try. I just wiped the area down with a little G96 on the rag.

It went back together nicely and I'll just keep an eye on things when I get to the range.
 
Last edited:
Westicle said:
I would use blue loctite... on everything.
Click to expand...
Loctite on thread inserts (notice the shiny stainless things embedded in the al rail that look like heli-coils) isn't the best idea. It's possible for the loctite to turn the insert when you remove the bolt.

Light oil + proper torque - with a small torque wrench - will do just fine. Anti-seize also works, but (because it is so slippery) the torque should be reduced by, say, 20-30%.

loctite is great for non-inserted fasteners that are difficult to torque properly, and I have purple, blue, red, and green in order to have the right one for the right job.
 
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