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Thread: Rifle upper on carbine lenght lower?

  1. #21
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    If you use the search feature, this has been discussed before. I have built a few of these using an H3 buffer and Sprinco blue spring and they all ran 100%.



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  2. #22
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    I always found doing this makes for a muzzle heavy unbalanced feeling rifle unless you can add some weight to the stock.

  3. #23
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    5.56 Bonded:

    Please note that I stated I changed out the system, not the buffer. Each system consists of a buffer, receiver extension, [buffer] spring, and various other parts (e.g., end plate, plain round/"castle" nut, stepped extension/extension), as appropriate.

    If I had only swapped out the buffers, I would not be so happy.
    'That whole effort was held together by sweat, shame, and a tiny bit of pride.' -- Son of Commander Paisley

  4. #24
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    Quote Originally Posted by GH41 View Post
    You know that an extra upper laying around at some point will require a lower for it?? Why not just buy a fixed stock 20" rifle now. I would at least do the math.
    I hear ya and I do have a Colt "Sporter" lower with the odd size pins and the required modified bolt carrier. This is why I have a LMT lower bought at a good price to go with the Colt 16" upper. One of 'em may have to use the neutered lower with bolt carrier, they do work just fine by-the-way..

    What buffer should I use with the rifle upper and carbine length lower?
    Last edited by 1986s4; 10-19-17 at 08:54.

  5. #25
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    Quote Originally Posted by 1986s4 View Post
    What buffer should I use with the rifle upper and carbine length lower?
    A rifle buffer and a H3 buffer are both right at 5.4 ounces in weight.

    Andy

  6. #26
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    Quote Originally Posted by Amicus View Post
    5.56 Bonded:

    Please note that I stated I changed out the system, not the buffer. Each system consists of a buffer, receiver extension, [buffer] spring, and various other parts (e.g., end plate, plain round/"castle" nut, stepped extension/extension), as appropriate.

    If I had only swapped out the buffers, I would not be so happy.
    Ah ok, I thought by system you just meant the buffer, and not the entire buffer tube and everything.

    Lol that makes much more sense now.

  7. #27
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    Quote Originally Posted by mack7.62 View Post
    I always found doing this makes for a muzzle heavy unbalanced feeling rifle unless you can add some weight to the stock.
    My setup ( rifle upper, carbine lower ) is indeed nose heavy, however the barrel has a heavyish profile, and the handguard is gigantic and very heavy by itself. I'm sure if built thoughtfully ( like the FN DMR ) with a lightweight FF handguard that the rifle would balance nicely.

  8. #28
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    Quote Originally Posted by cd228 View Post
    Hmm, I remember your in theatre M4A1 conversion, I don't remember seeing your homemade M16A5s? Where you using the USGI H buffers?
    Yeah I never showed those I made up, which came out of the loss of a few M14 EBR's from damage and being unable to get to Bargam to swap them out. The first one came out of the need to get back to the squad level a SDM rifle, which started with the extra Troy handguard I had ordered from doing up my M4A1. I used the perfectly fine EBR scope mounts, cutting off the end where the mount connects to the stripper clip guide, making them a perfect in country cantilever mount with the EBR' Leupold Mk4 LR/T and rings.
    Here is the original one, still sporting a A2 buttstock, which lasted only the first time it went out. I have to dig out my old hardrive for the pics with the carbine extension set up, which worked fine. The in country conversions defiantly filled the void left by the damaged M14's at the squad level.

    Sent from my SM-G920T using Tapatalk
    Last edited by ChoppinFatTony; 10-20-17 at 17:20.
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  9. #29
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    Quote Originally Posted by ChoppinFatTony View Post
    Yeah I never showed those I made up, which came out of the loss of a few M14 EBR's from damage and being unable to get to Bargam to swap them out. The first one came out of the need to get back to the squad level a SDM rifle, which started with the extra Troy handguard I had ordered from doing up my M4A1. I used the perfectly fine EBR scope mounts, cutting off the end where the mount connects to the stripper clip guide, making them a perfect in country cantilever mount with the EBR' Leupold Mk4 LR/T and rings.
    Here is the original one, still sporting a A2 buttstock, which lasted only the first time it went out. I have to dig out my old hardrive for the pics with the carbine extension set up, which worked fine. The in country conversions defiantly filled the void left by the damaged M14's at the squad level.

    Sent from my SM-G920T using Tapatalk
    I can understand you not showing those around. The brass would have shit their pants and you would have gotten bad paper. I saw the BC write up the scout PL because his guys wore Shemaghs. Your rig was definitely a step in the right direction for an SDM, I'd have liked to have seen MK 12s or a cut down M110s in the arms room at CO level. I was always amazed by what you guys were able to pull off in that particular arms room.
    Last edited by cd228; 10-28-17 at 10:39.

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