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Thread: converting AR to manual operation

  1. #11
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    Quote Originally Posted by donwalk View Post
    or, if it would be a "Blow back"...and...if the spring and buffer were left in place...still be semi-auto?

    sorry if i sound like a novice...i am...i'm familar with the M1 Garand, M1 carbine operating systems, but not so much the M4/M16...they came into issue after i got out of the service.
    I doubt it would work as a blow back or even semi-auto without the gas system. It's highly improbable the bolt would move at all.
    -VERITAS VINCIT-

  2. #12
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    It won't work as a semi auto any more, or as a blow back.

    Watch the M4 torture video's, once the gas tube melts, the weapon is a bolt action from then on.

    http://www.youtube.com/watch?v=Kzfm4pYhIyY

  3. #13
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    california died a long time ago.... And to think this is where the AR was born. Birthed from E. Stoners genius womb.

    Forgive the wrong doers in this country & state Mr. Stoner. They know not of what they are doing.

    OP yes you could turn it into a bolt action.

  4. #14
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    I've heard of people doing that before. I don't mean to be taking the conversation on a different track, but, if this bill were to become law, I would seriously consider selling the rifle prior to destroying the gas system. Besides, depending on the final form of the law, you might be grandfathered in, considering your rifle was purchased prior to the passage of the law. Ex Post Facto has to stand for something. If you couldn't be grandfathered in, I would invest the money made when I sold the AR in a good bolt-action scout rifle. It just seems to me that having a manually operated AR defeats the purpose of having an AR in the first place, IMHO.
    Last edited by goodoleboy; 07-02-12 at 21:30.
    Ted Kennedy's car has killed more people than my AR.

  5. #15
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    Do not weld the gas port of the barrel. Welding on a barrel rarely ends well.

    The simplest mod would be to remove the gas tube and install a gas cut off type gas block. get the type that's regulated by a set screw. Close it off and stake the screw in place.

    If that's not good enough, order a new barrel without the gas port.

    The action will only function as a manual with the gas tube removed.

    Another option is to get a bolt action upper. Dave Tubb designed one and uses it in competition. I know no other details about it
    INSIDE PLAN OF BOX
    1. ROAD-RUNNER LIFTS GLASS OF WATER- PULLING UP MATCH
    2. MATCH SCRATCHES ON MATCH-BOX
    3. MATCH LIGHTS FUSE TO TNT
    4. BOOM!
    5. HA-HA!!

    -WILE E. COYOTE, AUTHOR OF "EVERYTHING I NEEDED TO KNOW IN LIFE, I LEARNED FROM GOLDBERG & MURPHY"

    http://i115.photobucket.com/albums/n289/SgtSongDog/AR%20Carbine/DSC_0114.jpg
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  6. #16
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    I agree with MistWolf.

    I've read that manually operated AR15s like what you describe are in use in the UK, where semiauto rifles are completely banned.

  7. #17
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    Quote Originally Posted by SomeOtherGuy View Post
    I agree with MistWolf.

    I've read that manually operated AR15s like what you describe are in use in the UK, where semiauto rifles are completely banned.
    In UK they have lever action AR15. Yes, lever action.

    I do not know how internal design looks but pistol grip is used to cycle rifle in lever action manner. I've seen video of guy shooting in on IPSC course almost as fast as semi-auto. I can not find link right now, I think I see it somewhere on IPSC Global Village forum.
    Montrala

    I'm sponsored competition shooter representing Heckler&Koch, Kahles, Hornady and Typhoon Defence brands in Poland, so I can be biased

    http://montrala.blogspot.com

  8. #18
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    or, if it would be a "Blow back"...and...if the spring and buffer were left in place...still be semi-auto?
    The AR-15 works by the pressure of the expanding gas in the sealed chamber of the bolt carrier. No gas impinges on the bolt face at all, therefore the bolt will not move. Even if it did, the bolt has to rotate to unlock and cycle, and gas pushing on the bolt face will not unlock the bolt.

  9. #19
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    Turing your upper in a single shot would be simple.

    However the problem as I see it is that the upper is easily removed from the lower and therefore not a permanent modification to the rifle.
    Certified Glock Armorer

  10. #20
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    There is no "constructive possession" of AW's in CA so if you modify an upper to not run semi auto, and you leave that upper on that lower, that complete rifle is not an AW.
    Now, as soon as you swap to a normal upper, then it's an AW again...
    Randall Rausch
    AR15 Barrel Guru
    California Precision Rifle Club founding member

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