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Thread: RRA barrels. M4 feed ramps?

  1. #11
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    Quote Originally Posted by polymorpheous View Post
    All these new members starting threads about RRA lately.
    Is there a big marketing push with RRA?

    OP, look for a different barrel.
    Rock River is just not up to spec.
    Wrong material, tight chambers, etc.
    Daniel Defense had some 1/9 twist barrels. (They do have the extended feedramp cuts.)
    https://danieldefense.com/cold-hamme...arrel_twist=38
    I've been a member here longer than you so I am not sure if you are refering to me or not. More than likely I was shooting my Colt Ar-15 SP1 long before you were out of diapers. Just because someone doesn't have 3 million posts is not an indicator of gun knowledge.

  2. #12
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    Apparently, neither is signup date. For boasting about being a long-time member I find it ironic that you still want a 1/9, let alone RRA, barrel. Conventional wisdom of the shooting community says that 1/7 is the better option: it can handle lighter bullets fine and has the advantage of stabilizing heavier bullets as well. The shortcomings of RRA are also well documented.

    Quote Originally Posted by infantryman View Post
    Just because someone doesn't have 3 million posts is not an indicator of gun knowledge.
    Last edited by Eric D.; 02-10-12 at 18:37.
    B.A.S. Mechanical Engineering Technology

  3. #13
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    Quote Originally Posted by infantryman View Post
    I've been a member here longer than you so I am not sure if you are refering to me or not. More than likely I was shooting my Colt Ar-15 SP1 long before you were out of diapers. Just because someone doesn't have 3 million posts is not an indicator of gun knowledge.
    Wow.
    Quote Originally Posted by scottryan View Post
    Anybody that owns or sells pistol versions of assault rifles is a bottom feeder, irregardless of the ban status of certain ammunition.

    They are illigetimate weapons that have no real purpose other than to attract retards to the gun community.

  4. #14
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    Quote Originally Posted by Eric D. View Post
    Apparently, neither is signup date. For boasting about being a long-time member I find it ironic that you still want a 1/9, let alone RRA, barrel. Conventional wisdom of the shooting community says that 1/7 is the better option: it can handle lighter bullets fine and has the advantage of stabilizing heavier bullets as well. The shortcomings of RRA are also well documented.
    I mean I couldn't say it better than that. Quoted for truth.

  5. #15
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    Quote Originally Posted by zibby43 View Post
    I mean I couldn't say it better than that. Quoted for truth.
    truth? barrel twist debate is as tiring as 9mm vs .40 vs .45. Now I know what Larry Vickers means when he says "internet fan boys" ... M4carbine.net is full of them.

    to quote Kyle Lamb in Green Eyes and Black Rifles..." The military chose a 1:7 twist to help stabilize specialized bullets. This twist works well but it is not optimized for overall performance. If you are shooting a mil spec barrel, it may actually have a 1:7 twist, and if you have selected this particular barrel, accuracy is not paramount on your ar checklist. he goes on.. "A 1:9 twist is a great all around twist; however, for 75 and 77 grain bullets a 1:8 twist is noticablly better"

    I don't own one single bullet in the 75 -77 grain dept. I do however own more than 10,000 55 grain bullets. I'll stick with 1:9 even though BCM and DD don't make it their standard. BCM and DD make an excellent product I am sure. and there are a hell of a lot of Bushmaster and RRA guns that run just as well.
    Last edited by infantryman; 02-10-12 at 23:06.

  6. #16
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    Quote Originally Posted by infantryman View Post
    truth? barrel twist debate is as tiring as 9mm vs .40 vs .45. Now I know what Larry Vickers means when he says "internet fan boys" ... M4carbine.net is full of them.
    Feel free to list the advantages of a 1:9 twist at any time. Or you could keep making ad hominem attacks.

    You've also been asked several times why you want the 1:9 barrel but you continue to ignore the inquiries.

    And quite frankly, I didn't think there was any debate between 1:9 and 1:7.

    Edit: I see you edited your post after my reply.
    Last edited by zibby43; 02-10-12 at 23:11.

  7. #17
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    Funny how he calls us fanboys, yet he quotes Lamb and Vickers.

  8. #18
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    Please tone it down or your new found discovery of M4C will be shortlived.

    1. 1/7 is better in that they are almost always true 5.56 chambers, and they have had HP/MPI testing.

    2. Internet myths aside many of us who shoot 1/7 barrels see very accurate groups with a broader range of ammo.

    3. Once you go above 69gr. it is not always a given that you will be able to shoot the heavier rounds. Some will and some haven't.

    The 1/8 claim seems to be true and I believe that some have shown in the past that there are many 1/7 barrels that are actually closer to the 1/8.

    Quote Originally Posted by infantryman View Post
    truth? barrel twist debate is as tiring as 9mm vs .40 vs .45. Now I know what Larry Vickers means when he says "internet fan boys" ... M4carbine.net is full of them.

    to quote Kyle Lamb in Green Eyes and Black Rifles..." The military chose a 1:7 twist to help stabilize specialized bullets. This twist works well but it is not optimized for overall performance. If you are shooting a mil spec barrel, it may actually have a 1:7 twist, and if you have selected this particular barrel, accuracy is not paramount on your ar checklist. he goes on.. "A 1:9 twist is a great all around twist; however, for 75 and 77 grain bullets a 1:8 twist is noticablly better"

    I don't own one single bullet in the 75 -77 grain dept. I do however own more than 10,000 55 grain bullets. I'll stick with 1:9 even though BCM and DD don't make it their standard. BCM and DD make an excellent product I am sure. and there are a hell of a lot of Bushmaster and RRA guns that run just as well.



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  9. #19
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    Quote Originally Posted by Iraqgunz View Post
    Please tone it down or your new found discovery of M4C will be shortlived.

    1. 1/7 is better in that they are almost always true 5.56 chambers, and they have had HP/MPI testing.

    2. Internet myths aside many of us who shoot 1/7 barrels see very accurate groups with a broader range of ammo.

    3. Once you go above 69gr. it is not always a given that you will be able to shoot the heavier rounds. Some will and some haven't.

    The 1/8 claim seems to be true and I believe that some have shown in the past that there are many 1/7 barrels that are actually closer to the 1/8.
    my original question went unanswered and I was given a bunch of unnecessary advice that was also unwanted. the answer to the question is no, RRA do not sell their light weight mid-length barrel with m4 fed ramps. I am sorry I posted the question.

  10. #20
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    I see where the OP is coming from, he asked a question and got a bunch of unwanted advice, I don't see why the question cant be answered and move on. The man wants what he wants.

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