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AR buffer tube grease, what to use?

Discussion in 'Rifle Country' started by mookiie, Mar 19, 2013.

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  1. mookiie

    mookiie Member

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    I am thinking that I need to grease my AR buffer tube. What would be a good option - lithium grease? Thanks for any suggestions.
     
  2. Robert

    Robert Moderator Staff Member

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    Why? I have never heard of greasing the buffer tube, buffer or spring. But that does not mean it can't be done.
     
  3. dodge

    dodge Member

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    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.
     
  4. highorder

    highorder Member

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    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.
     
  5. mookiie

    mookiie Member

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    Ok, if I can just oil it instead I will just stick with that, thanks!
     
  6. tuj

    tuj Member

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  7. holdencm9

    holdencm9 Member

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    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!
     
  8. Robert

    Robert Moderator Staff Member

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    Learn something new everyday. That being said I do not notice the the sound of my spring at all.
     
  9. MachIVshooter

    MachIVshooter Member

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    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.
     
  10. holdencm9

    holdencm9 Member

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    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!"
     
  11. Krusty783

    Krusty783 Member

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    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.
     
  12. Fishbed77

    Fishbed77 Member

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    I have never used lube in the buffer tube. Just a very light coat of oil on the spring to prevent rust.
     
  13. Warp

    Warp Member

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    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.
     
  14. Onmilo

    Onmilo Member

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    I apply a very light coat of Tetra gun grease to the inside of the extension tube.
    A little goes a long way
     
  15. HOOfan_1

    HOOfan_1 Member

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    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.
     
  16. Sam Cade

    Sam Cade Member

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    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.
     
  17. HOOfan_1

    HOOfan_1 Member

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    Well, my ACS stock has the friction lock. The only sproing I notice is when the trigger resets from the disconnect
     
  18. mookiie

    mookiie Member

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    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!
     
  19. taliv

    taliv Moderator

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    don't use grease. use oil.
     
  20. AFDoc

    AFDoc Member

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    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?
     
  21. SuperNaut

    SuperNaut Member

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    My thoughts are that he's trying to sell you liberal amounts of lithium grease.
     
  22. Walkalong

    Walkalong Moderator

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    I am a Midway fan, and his videos can be interesting and helpful sometimes, but they are far from the final word on anything.
     
  23. BSA1

    BSA1 Member

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    Indeed. Watch Larry Potterfield's video on how to build your AR lower and count how many gunsmith tools he uses and recommends.
     
  24. CLP

    CLP Member

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    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.
     
  25. AFDoc

    AFDoc Member

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    The US Army knows about these things. I think I will apply "a film barely visible to the eye."
     
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