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Thread: Carbine vs Mid

  1. #21
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    Quote Originally Posted by glockkid88 View Post
    This thread is a big relief to me. I just purchased a ddm4 carbine about 2 months ago. I was sure that I had bought the best carbine in my price range until I started seeing the craze for midlength systems. I found thinking that I may have made the wrong decision and maybe should have bought a midlength carbine. I am new to the rifles and am trying not to get too caught up in the newest coolest shit craze. I almost bought a new lower to build a midlenght m4 recently but now I think that the money would be better spent on ammo and learning to shoot the carbine length system I have. I will probably shoot no more than 5k next year and I am sure the ddm4 will serve me well.
    Wise choice. I have two of each and enjoy shooting both but I do prefer the mid-lengths, but mostly for more rail for hand placement. Throw a Battlecomp on her and you won't regret it.
    For God and the soldier we adore, In time of danger, not before! The danger passed, and all things righted, God is forgotten and the soldier slighted." - Rudyard Kipling

  2. #22
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    ive got just over 500 rounds in a day thru my dd carbine with not one failure. mixed ammo wolf and brass cased fedral

  3. #23
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    Quote Originally Posted by fivefivesix View Post
    ive got just over 500 rounds in a day thru my dd carbine with not one failure. mixed ammo wolf and brass cased fedral
    Careful with that combo. Mixing steel and brass ammo in the same shooting session, without a thorough chamber scrubbing, is a recipe for getting a stuck case. You can get away with it with true 5.56 chambers, but not so much in 223 chambers, but it can still happen. Definitely don't do that in a class. It will be an exercise in frustration when stuck cases suddenly repeat over and over again.
    Last edited by RogerinTPA; 11-08-10 at 23:02.
    For God and the soldier we adore, In time of danger, not before! The danger passed, and all things righted, God is forgotten and the soldier slighted." - Rudyard Kipling

  4. #24
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    that was one of the reasons i did it. it ran the wolf flwless. so i said lets mix it up. its the new polymer coated stuff and my dd barell is stamped 5.56. but it ran great

  5. #25
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    I'm seriously investigating the mid-length system, but the carbine AR is a known quantity with years of service and the mid-length is not. Logically, it sounds like the mid-length would be more durable and reliable, but then again maybe not. It's still not a full length gas system. Maybe the mid-length rifle's bolt lasts 3,000 rounds longer than a carbine's bolt? Maybe it's a negligible difference? Until I see some actual data I say it's a matter of preference also.

  6. #26
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    Run your carbine with a LMT enhanced bolt, H buffer and M16 carrier, change cam pin from time to time and your carbine will outlast a middy with a standard bolt, car buffer and semi carrier by a lot. Parts play a larger role in durability. I guess a middy with good parts would out last it but the barrel would be shot out before this happens.

    IMO gas port erosion is the big killer for ARs in general.
    Last edited by DSZM4; 11-09-10 at 10:55.

  7. #27
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    Quote Originally Posted by JDW67 View Post
    That's a good point. Are there any middies in the Military? Are any units deploying any middies?
    A few IPs/SMEs on TOS confirmed they were in use on some Recon / accurized M4 variants, though all were custom-built/tailored to those using them. None were standard issue equipment. The standard Recce gas system is carbine-gas length.
    Last edited by Skyyr; 11-09-10 at 15:40.

  8. #28
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    unlock dwell time

    I don't understand why when making barrels really short manufacturers don't go ahead and modify the dwell time on the carrier. For the same effect of carbine vs mid gas sytem and the impulse delay, you can add this to to the cut in the carrier in the "dwell" time to get the same effect. You have to be careful because soon the extractor pin that is held in by the bolt group begins to stick out when the bolt is forward but then you just have to step this to keep it in while the bolt is sticking out of the carrier. That is if you go that far, just add enough dwell time to keep it retained and see what that gets you.

  9. #29
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    Quote Originally Posted by Doc Glockster View Post
    I'm seriously investigating the mid-length system, but the carbine AR is a known quantity with years of service and the mid-length is not. Logically, it sounds like the mid-length would be more durable and reliable, but then again maybe not. It's still not a full length gas system. Maybe the mid-length rifle's bolt lasts 3,000 rounds longer than a carbine's bolt? Maybe it's a negligible difference? Until I see some actual data I say it's a matter of preference also.
    even ignoring all of these, the extra 2" of handguard is a lot more comfortable than extending the stock 2" to make up for it on a carbine. You can hold a midlength more compact that way. Ergonomic advantage alone is worth it.
    Last edited by ForTehNguyen; 11-11-10 at 16:26.

  10. #30
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    Quote Originally Posted by armatac View Post
    I don't understand why when making barrels really short manufacturers don't go ahead and modify the dwell time on the carrier. For the same effect of carbine vs mid gas sytem and the impulse delay, you can add this to to the cut in the carrier in the "dwell" time to get the same effect. You have to be careful because soon the extractor pin that is held in by the bolt group begins to stick out when the bolt is forward but then you just have to step this to keep it in while the bolt is sticking out of the carrier. That is if you go that far, just add enough dwell time to keep it retained and see what that gets you.
    what you're promoting would require the action to be longer, thus, creating a proprietary rifle that would be longer than the ar15 and have proprietary internals. That's unacceptable.

    It's easier to move the gas port closer to the muzzle.

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