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Old April 21, 2020, 05:48 AM   #1
kymasabe
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Does anyone dry-lube their AR buffer tubes?

I'm assembling an AR lower and remembered I'd run out of some dry lube that I liked that I'd picked up at a gun show, worked well in buffer tubes. Was wondering if anyone else is doing same and what you might be using, i'm trying to find an easier to find/buy alternative to what I was using.
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Old April 21, 2020, 05:38 PM   #2
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I've never heard of using dry lube on a buffer tube. What advantage is there in using it?
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Old April 21, 2020, 08:30 PM   #3
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Well, I suppose a little dry lube inside it wouldn't hurt.
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Old April 21, 2020, 08:42 PM   #4
Nathan
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Might not....might lock it up tighter than a drum when you really need it to work. Personally, I wipe the spring with oil and slide it in.
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Old April 21, 2020, 11:51 PM   #5
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I just oil it (I’m a big fan of Mobil 1, personally). Oil helps dampen the “sproinnnnng” sound too.

If you do choose to use use dry lube, don’t use graphite in an aluminum receiver; it promotes corrosion of aluminum, IIRC.
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Old April 22, 2020, 07:16 AM   #6
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Quote:
Originally Posted by Nathan View Post
Might not....might lock it up tighter than a drum when you really need it to work. Personally, I wipe the spring with oil and slide it in.
It depends what he means by "dry lube". Instead of meaning something that is applied dry like graphite, he might mean one of the products that is applied from a spray can and then dries. I have a couple of those products that I use on the priming and the powder systems of a Dillon 550b and various firearms and after observing how they work, have no concern that they will "lock up" a buffer spring on an AR.
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Old April 22, 2020, 12:29 PM   #7
jrothWA
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WHAT, and remove my audible confirmation of firing a round and loading a fresh one!

I haven't but consider dusting the OD with graphite dust.
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Old April 23, 2020, 03:17 AM   #8
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Nah.

Not a bad idea to be honest.

But not a great one either in my opinion.

The only way I could imagine dry lube being a benefit is in ridiculously cold conditions. But what do I know. I'm no expert.

I'd chose a wet lube for corrosion protection, reduced friction, and reduced wear, every time. Even a bit of grease.

I think if the rest of the rifle is taken care of, you could probably get away with everything to nothing as a lube in the buffer tube and as long as nothing was physically impeding the motion, I speculate that the rifle would keep working just fine.
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Old April 23, 2020, 04:02 PM   #9
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My drill sergeant didn't tell me to do it, so I still don't.
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Old April 23, 2020, 07:15 PM   #10
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I tend to use TW-25B grease on my buffer assembly. Stuff stays slick forever and doesn't tend to get sticky when there's buildup. Works great for smoothing charging handles too.
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Old April 23, 2020, 09:01 PM   #11
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Well, I've been using XF-7. Sprays on, dries quickly, leaves a dry film that's not sticky, doesn't attract dirt or grime, seems to make buffer springs move a little more easily and quietly. I've run out and was wondering if there was an easy to find alternative. I dont want to use grease or oil in the tube.
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Old April 24, 2020, 01:29 PM   #12
dakota.potts
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If you want to stick with a dry lube, you could look for powdered graphite. You could also look for a molybdenum disulfide dry lube. Never tried either one in a buffer tube though.
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Old April 24, 2020, 07:14 PM   #13
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As above DO NOT USE GRAPHITE ON ALUMINUM.... it destroys aluminum.
People found this out the hard way after using a graphite based anti-seize on AR barrel threads.

I always apply Super Lube grease with Teflon on my buffer springs, but lately I've been using a dry lube on shotgun magazine tubes.
What I'm using is WD-40 Dry Lube with Teflon I buy at Menard's.
You can find it other places.

This seems to work well in shotgun magazines. It so far has prevented rust or corrosion, won't hold dirt or debris, and seems to lubricate well.
I don't see any reason it wouldn't work in an AR buffer tube, BUT an AR buffer is operating much faster and harder then a shotgun magazine tube, so it might fail there.

I will not use a dry lube in any other firearms application. For firearms actions a liquid lube or grease is best.
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Old April 28, 2020, 12:00 AM   #14
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I was thinking Bike Chain lube that goes on wet and dries. It's teflon based. White Lightning or something.
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Old April 28, 2020, 01:35 AM   #15
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I lube the buffer spring with Militec grease. Works great. Why not dry lube, you ask? Teflon spray costs a lot more than grease. And I have grease. No other reasons.
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Old April 30, 2020, 05:27 PM   #16
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I guess I don't shoot any particular one of my AR's to notice wear on my buffer tube & spring, but I did just receive another bottle of 99% alcohol. I might mix up some HBN powder suspension and see what it does. Uncle Sam always said to leave that area dry, so I have so far.
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