Quantcast
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

AR15 extractor modification?

Discussion in 'Gunsmithing and Repairs' started by Oleg Volk, Mar 14, 2003.

Thread Status:
Not open for further replies.
  1. Oleg Volk

    Oleg Volk Moderator Emeritus

    Joined:
    Dec 19, 2002
    Messages:
    9,155
    Location:
    Nashville, TN
  2. Badger Arms

    Badger Arms Member

    Joined:
    Jan 1, 2003
    Messages:
    3,738
    Location:
    Harnett County, NC
    The D ring is an rubber ring that slips over the extractor spring. It is just like a recoil buffer on an auto-pistol in that it prevents metal to metal slamming and damaging of the spring. It basicallystops overcompression and slows the extractor speed. The fallacy here is that you are preventing parts breakage. The reality is that the rubber ring will wear out quickly and itself need replacement. My opinion is that if you replace the spring every so often (Cheap) you don't need the D Ring. If you want the peace of mind, go ahead and install it.
     
  3. Badger Arms

    Badger Arms Member

    Joined:
    Jan 1, 2003
    Messages:
    3,738
    Location:
    Harnett County, NC
  4. Oleg Volk

    Oleg Volk Moderator Emeritus

    Joined:
    Dec 19, 2002
    Messages:
    9,155
    Location:
    Nashville, TN
    So where would I find that o-ring?
     
  5. Badger Arms

    Badger Arms Member

    Joined:
    Jan 1, 2003
    Messages:
    3,738
    Location:
    Harnett County, NC
  6. gun-fucious

    gun-fucious Member

    Joined:
    Dec 24, 2002
    Messages:
    1,977
    Location:
    centre of the PA
    i think it was created as a bandaid for 14 inch CARs that had gas port issues

    www.Fultonarmory.com sells the D-Fender
     
  7. Intel6

    Intel6 Member

    Joined:
    Feb 7, 2003
    Messages:
    66
    Location:
    SouthEast AZ
    They sure want a pretty penny for those little pieces of plastic? Wolff spring company is now offering a replacement ectractor spring that is more powerful to accomplish that same thing.
     
  8. Badger Arms

    Badger Arms Member

    Joined:
    Jan 1, 2003
    Messages:
    3,738
    Location:
    Harnett County, NC
    Uh, not QUITE the same thing. What the rubber ring does is impart extra force ther further the extractor moves in an incremental fassion. A strong spring starts out strong whereas the rubber ring will allow a smaller amount of force when a smaller amount is necessary such as when the extractor is snapping over a chambered round. I don't know the dynamics of the extraction cycle enough to know if this is a theoretical or real advantage. I guess only testing can confirm that.
     
  9. JollyWhiteGiant

    JollyWhiteGiant Member

    Joined:
    Jan 3, 2003
    Messages:
    84
    Location:
    central MN
    Anyone ever seen a broken extractor spring after 1500 rounds? I am at about 2500 on mine with no problems. I've never heard of one breaking after only 1500 rounds. Maybey after 10,000 rounds when you would expect small parts to need replacing.
     
  10. Badger Arms

    Badger Arms Member

    Joined:
    Jan 1, 2003
    Messages:
    3,738
    Location:
    Harnett County, NC
    Broke first extractor spring recently on a rifle that had about 800 rounds of Russian CRAP in it. Other than that, no problems. It's so cheap, you might want to replace it after every 1000 rounds anyhow just as preventative maintenance. Couldn't hurt.
     
  11. Will Fennell

    Will Fennell Member

    Joined:
    Dec 24, 2002
    Messages:
    748
    Location:
    Sharon, SC USA
    I used the WOLFE XP spring

    I have a "put together " AR, DPMS complete lower with a BUSHMASTER DISSIPATOR upper. I was having stoppages that were related to poor/inconsistant extraction.

    Inspection showed that I had a very weak recoil spring, in the DPMS lower, and what appeared to be a weak extractor spring in the BUSHMASTER bolt.

    I replaced both with springs from WOLFE, regualer strenght recoil spring[much heavier than what came in the lower from DPMS], and the Extra Power extractor spring, which was considerably stronger than the spring that came in the bolt from BUSHMASTER.

    I don't know whether it was the recoil spring, the extractor spring, or a little of both[I suspect the latter], but the gun is running perfectly now, and has for the last couple of thousand rounds.

    Springs are cheap, guns are not.......I change springs frequently

    :scrutiny:

    But then, I shoot alot:rolleyes:

    Here is a pic of the rifle, posted in the Knife&Gun pic thread....

    [​IMG]
     
Thread Status:
Not open for further replies.

Share This Page