AR buffer tube grease, what to use?


PDA






mookiie
March 19, 2013, 08:46 AM
I am thinking that I need to grease my AR buffer tube. What would be a good option - lithium grease? Thanks for any suggestions.

If you enjoyed reading about "AR buffer tube grease, what to use?" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!
Robert
March 19, 2013, 08:59 AM
Why? I have never heard of greasing the buffer tube, buffer or spring. But that does not mean it can't be done.

dodge
March 19, 2013, 09:21 AM
I just take an oily rag and wipe the spring down. This seems to help with the spring that you sometimes hear when firing the gun.

highorder
March 19, 2013, 09:23 AM
I use a bit of moly grease on my buffer spring to quiet the "sproing."

I don't use grease in sandy or dirty environments.

mookiie
March 19, 2013, 09:37 AM
Ok, if I can just oil it instead I will just stick with that, thanks!

tuj
March 19, 2013, 09:43 AM
You are supposed to lube the buffer spring.

http://www.ar15.com/forums/t_3_7/548967_AR15_LUBE_POINTS.html

holdencm9
March 19, 2013, 09:43 AM
Very light coat, if any. Not much needed in there.

I just recently tried some dri-lube that I use for my .22 and seems to work well too. But really the sproing is not indicative of any problems. Just kind of irks some people!

Robert
March 19, 2013, 09:44 AM
Learn something new everyday. That being said I do not notice the the sound of my spring at all.

MachIVshooter
March 19, 2013, 09:51 AM
I never actually lube the buffer & spring, but the BCG gets hosed with CLP whenever they're put up, and they sit vertically on the rack, so I'm sure there's a decent amount of lube running down in there.

holdencm9
March 19, 2013, 09:59 AM
Those pictures from the AR forum are nice! I'll have to print them.

That said, the buffer spring( along with a lot of other spots on the pictures) is very very low on the list of priorities of lubrication points. It is technically rubbing in there (hence the noise sometimes) but definitely not a high-heat friction situation like the BCG. I have also never felt compelled to lube the FA or dust cover pin. But, apparently the photos were compiled from an Army Manual and their philosophy is probably "Uncertainty? CLP!"

Krusty783
March 19, 2013, 10:12 AM
Wheel bearing grease. Put some on your index finger and thumb and run the spring through your fingers. Get more grease as needed.

This is what eliminated the "sproing" on my rifle. Some folks like it, but it annoys the hell out of me. It's cause by the spring rubbing against the inside of the buffer tube, though my new rifle doesn't do it.

Fishbed77
March 19, 2013, 10:18 AM
I have never used lube in the buffer tube. Just a very light coat of oil on the spring to prevent rust.

Warp
March 19, 2013, 10:59 AM
You don't need to lube anything in the receiver extension/buffer assembly. Many people never do. Some will likely find its way in there from the carrier during cycling anyway though.

You can lightly coat the spring with oil, if you like. Personally I put a tiny little bit of oil on the spring, just a tad, using an index finger and thumb to apply down the outside of the spring.

Onmilo
March 19, 2013, 11:43 AM
I apply a very light coat of Tetra gun grease to the inside of the extension tube.
A little goes a long way

HOOfan_1
March 19, 2013, 01:45 PM
I've never lubed mine, I don't notice a sproing either...but I have an ACS stock with a wide cheek rest and always wear ear protection.

I've never found that I have to clean my lower receiver after firing it either. I usually take a Q-tip drenched in CLP and swab it around the trigger assembly, but it comes back perfectly clean. I am sure some people have to clean it up really good. I guess different rifles, have different quirks.

Sam Cade
March 19, 2013, 02:06 PM
I don't notice a sproing either...but I have an ACS stock with a wide cheek rest and always wear ear protection.


The sproinging is much more noticeable with a fixed stock since everything is perfectly rigid and conducts vibration better.

It can even be exacerbated by wearing a set of plastic bodied cans that contact the stock.

HOOfan_1
March 19, 2013, 02:25 PM
Well, my ACS stock has the friction lock. The only sproing I notice is when the trigger resets from the disconnect

mookiie
March 20, 2013, 01:57 PM
Well I have not yet noticed the "sprong" sound it makes, but I will probably put a little grease on the spring just or good measure. Thanks everyone for the links and discussion!

taliv
March 20, 2013, 02:16 PM
don't use grease. use oil.

AFDoc
June 16, 2015, 08:57 PM
Sorry for dredging up this old thread, but I am in the process of my first AR build, so I consulted MidwayUSA. Larry Potterfield--in his lower assembly build video--demonstrates using liberal "lithium grease" on the buffer spring and buffer. He's kind of the Dean of Gunsmithing, so his advice is important. What are your thoughts?

SuperNaut
June 16, 2015, 09:03 PM
Sorry for dredging up this old thread, but I am in the process of my first AR build, so I consulted MidwayUSA. Larry Potterfield--in his lower assembly build video--demonstrates using liberal "lithium grease" on the buffer spring and buffer. He's kind of the Dean of Gunsmithing, so his advice is important. What are your thoughts?
My thoughts are that he's trying to sell you liberal amounts of lithium grease.

Walkalong
June 16, 2015, 09:23 PM
I am a Midway fan, and his videos can be interesting and helpful sometimes, but they are far from the final word on anything.

BSA1
June 16, 2015, 09:32 PM
Indeed. Watch Larry Potterfield's video on how to build your AR lower and count how many gunsmith tools he uses and recommends.

CLP
June 16, 2015, 11:34 PM
Per the Army's manual- "A film barely visible to the eye".

I don't like the idea of grease because it traps grit and debris and doesn't protect against rust any better than a light coat of oil.

AFDoc
June 16, 2015, 11:56 PM
The US Army knows about these things. I think I will apply "a film barely visible to the eye."

Dr.Rob
June 17, 2015, 12:35 AM
I use CLP, the 'sproing' is indeed a thing with a fixed stock, it acts like an echo chamber.

1911 guy
June 17, 2015, 04:00 AM
I won't go so far as to say I like the "sproing", but enough trigger time and you'll hear when the bolt locks back on empty. It sounds different. I'm not sure I'd want it eliminated.

cfullgraf
June 17, 2015, 06:00 AM
Even with a greased buffer spring, I can still hear the difference between when the bolt chambers another round or locks back on an empty magazine.

I do not care for the "sproing" in my ear but that is mostly a personal thing. The spring sliding in the buffer tube is a sliding contact so a little lubrication can be beneficial to the life of the tube.

I use a synthetic tractor/automotive grease. Synthetic greases do not seam to dry up and cake over time if exposed to air as much as petroleum based greases.

FishEngineer
June 17, 2015, 07:38 AM
Sorry for dredging up this old thread, but I am in the process of my first AR build, so I consulted MidwayUSA. Larry Potterfield--in his lower assembly build video--demonstrates using liberal "lithium grease" on the buffer spring and buffer. He's kind of the Dean of Gunsmithing, so his advice is important. What are your thoughts?


He is the dean of selling stuff!

NWcityguy2
June 17, 2015, 11:59 AM
The oil I put on my BCG eventually works its way back to the buffer spring, which I rarely if ever take out of my gun. The best way to get rid of the sprong is to switch over to a flat wire spring.

tcoz
June 17, 2015, 01:11 PM
Like most people, I oil my AR rather than grease it. I do however grease my M1 and K31 Swiss and I use Mobil 1 Synthetic. One eight dollar tube is enough to grease both for an entire lifetime.

cougar1717
June 17, 2015, 02:19 PM
I think that JP rifles (without the silent capture add on) are greased from the factory. The one I saw had white grease all over the buffer spring. It did reduce the "sproing" sound, but I'm not so sure I'd go that route for typical users. After depressing the buffer retaining pin, it looked like a mess of grease all over the buffer and spring. IMHO, I would much rather put a light coat of oil on the buffer spring and live with the "sproing" sound.

Blade First
June 17, 2015, 07:04 PM
There is a rather large surface area of contact between a reciprocating buffer spring and the tube that captures it. Two tricks that work very well for me:

1. A lighter-weight synthetic lube such as Lucas Extreme Duty or Frog Lube used on the outer surface of the coils;

2. A plastic insert for the back of the buffer spring called the 'Twang Buster' from Doublestar that prevents direct contact between the spring and bottom of the tube.

Not only is the 'twang' significantly reduced with this combo but the reduced friction, especially at the point where the bolt goes into battery, is remarkable.

Zerodefect
June 17, 2015, 08:36 PM
My BCG is heavily lubed.

So I don't need t lube my buffer. Some works it's way in there on it's own.

matrem
June 17, 2015, 10:11 PM
I'm guilty of having buffer springs in the "very damp with oil" mode.
And have yet to purposely apply any back there.

Maj Dad
June 17, 2015, 11:02 PM
Onmilo is on to something: I use Tetra Grease & lube on things like the buffer tube that don't need to be wet or gooey. Wipe it on, buff it well, and voila! No goo needed, not sand/grit attraction. Tetra is an underrated lube, I think, that I use for a lot of things, like M1 rifle/carbine/M14 bolts & op rods/slides. 1911s, auto pistols & rifles... :cool:

TanklessPro
June 17, 2015, 11:33 PM
I use Slip2000 EWL on everything. It's the best I have found. They even will send you a sample for free. Be warned you will end up ordering some.

DougW
June 18, 2015, 08:40 PM
The only time i hear the sprong (my A2) is occasionally shooting from the bench. But, I only shoot from the bench when zeroing. I never hear is running drills with my A2, and never hear it in my carbines. I have never oiled the buffer spring in any of my rifles.

SSN Vet
June 19, 2015, 03:36 PM
the Dean of Gunsmithing

I like Midway, and I like Larry's videos..... but do keep in mind that most people who build there own ARs do so with 1/4 the tools Larry says you need.

misterarman
June 21, 2015, 09:58 AM
Always thought if it's metal and it moves it should occasionally get some lube.
All Temp Tactical Lube. Best AR lube I have ever used.
Light coating on my fingers. It somehow does not attract dirt. Don't know how they manage that but I guess that's part of what makes it so good.

taliv
June 21, 2015, 10:56 AM
if you haven't figured it out by now, it's not a big deal.

if you just use your AR15 for plinking at the range, do anything you like, including filling it with grease.

if you use your AR15 in the field and need it to be reliable, then stick to a light coat of oil on the spring or nothing. Do not use grease.

If you enjoyed reading about "AR buffer tube grease, what to use?" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!