Grease Those AR's

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More Crane Dust Test

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Results of each individual lubricant:
 

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Dry is good, especially in hot arid regions and subarctic temperatures.

No, it isn't good. Not in an AR or an M16. I have used the M16 in the arctic and in the desert and every region in between. Dry is never good in an AR or M16.

Jeff
 
Graphite on an AR - wild!

Boy I wish that test report had the brand names...They tried graphite on an AR? Why not, they didn't own the piece or anything.

Iluv, I couldn't read your link. Rule of thumb is, if it works it's okay but if you're in unknown territory be cautious. I don't consider myself a "gun bunny" but I sure am an "armchair ranger." As an armchair ranger my needs are far less demanding than the courageous servicemen in combat. That's why they're the guys to ask about the lubes they use.

waterhouse, you caught me out. The problem we engineers have is that we want to qualify everything but then you end up with a half-inch thick report that would satisfy everyone but they don't read it. So we gotta simplify stuff so that we don't exasperate people more than we usually do. Another problem we sometimes have is seeing the forest because we're studying the shape of the needles on the trees. I want y'all to be a little skeptical about what I say on lubes, that's why you should ask the manufacturers of the lubes or weapons. Or the people who fire millions of rounds - remember Lubriplate on the M1? An engine lube that worked just fine for the service. I've got an email in right now to FTI, manufacturers of Tetra.

An engine does wear in. I'm surprised to hear 1500 miles though. I was told 200 miles when I bought my car. 200 miles / 200,000 lifetime miles is a tiny amount of wear time. I read a post re: CZ bolts where an experienced guy said to run a thousand rounds through it and it would be smooth as glass. I read people talking about 10,000 round lifetimes of barrels & I figure 1,000/10,000 is way more wear in time.

The "junky" RRA? A little grease is good, I use it on the Bushmaster and Bushmistress, a little Tetra on the rails.

You can run a fluoropolymer lube drier than Break-free, so comparing the two is a little difficult. I'll take Jeff's opinion everytime on Break-free. I still want to know how an NCO describes to his soldiers how much lube to use. 2-3 drops? 2-3 drops where? On the bolt? On the bolt & bolt carrier rails? Do the gas rings get one of the drops? Bushmaster says to use a generous amount of lube on the bolt. What does that mean?

I'll shut my pie hole now.
 
Boy I wish that test report had the brand names...

IIRC, Brand E is Militec; but it has been awhile so I may be wrong on that. The report was originally hosted by Militec on their website and mentioned which Brand was theirs.

2-3 drops? 2-3 drops where? On the bolt? On the bolt & bolt carrier rails? Do the gas rings get one of the drops?

I use the Slip 2000 myself now; but I put a drop on the gas rings, a drop on the little "collar" bearing surface around the bolt and then spread a drop of oil forward of the gas rings so that the entire surface of the bolt has a visible sheen of lube on it.

Other than that, I do a drop on the cam pin (same standard, visible sheen on the entire surface), a drop on the firing pin (mostly because it is easier to degunk if I do that, not for any real practical purpose) and a drop on each of the four "rails" of the bolt carrier group. A drop down the gas key finishes it and the rifle is ready to go. If it starts getting sluggish, I just shoot some more through the exhaust ports of the BCG onto the gas ring and I am good to go.
 
I apply a light coat of lithium grease on the bolt luggs and on the carrier where it rides in the upper. A drop of light oil on the gas rings, cam and firing pin.

This was taught to me by a gunsmith from the USAMU that has built more rifles that have won more gold than most have seen.

I don't know if this is right or wrong but it has gotten me through 8 years of highpower competition with over 40K rounds fired killing a barrel a year with no problems.

There are many ways to skin this cat. Some swear by it, some swear at it. YMMV
 
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Howard, I learned the same tricks from the same people.
I'm with ya' brother, only I use Tetra now.
 
I don't use/ don't recommend grease on an AR. I have seen it turn to nasty sludge, YMMV.
I use Slip 2000 which so far is the best lubricant I have found. The old standard Break Free CLP is a poor lubricant in my opinion.
It's also been my experience that ARs should be run on the wet side, I don't see them collecting more dirt or carbon than a dry AR and the dirt and carbon that gets in the action is either suspended in the lube or shot out with the lube.
I wouldn't take any RRA to a class where it would be subjected to a tortuous amount of use.
Getcha a Colt or LMT! :D
 
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