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  1. #1
    Shoperator
    Join Date
    Mar 2014
    Location
    Zionsville
    Posts
    14

    Need advice on buffers and buffer tubes

    I'm building an MK12-ish rifle. Heavy 18inch barrel with rifle length gas system, and I'm wondering if I really need to stick with the rifle buffer and tube are if I can use a carbine tube with it?

  2. #2
    Plinker
    Join Date
    Mar 2017
    Location
    Butlerville
    Posts
    59
    You can use a carbine buffer and spring with a rifle length system with no issue. Don't try mixing the springs and buffers around and you should be fine.

  3. #3
    Expert NyleRN's Avatar
    Join Date
    Dec 2013
    Location
    Scottsburg
    Posts
    2,016
    You can use a carbine type set up on your rifle but you need to buy the RET for a collapsible carbine stock. A RET for a rifle stock will not work with carbine. The buffers and springs are different also between the 2

  4. #4
    Marksman
    Join Date
    Feb 2010
    Location
    In Carroll County
    Posts
    325
    You can build a MK12 type rifle and use a carbine buffer tube and stock. Keep in mind there are 2 types of carbine buffer tubes, mil-spec and commercial. Mil-spec buffer tubes have an outside diameter of 1.148", while commercial-spec tubes are 1.168" in diameter. Determine what carbine stock you really want. Make sure your carbine stock and buffer tube are the same spec, either mil-spec or commercial. The buffers, springs and end plate are the same for both commercial and mil-spec buffer tubes.

  5. #5
    Marksman
    Join Date
    Jul 2010
    Location
    johnson county
    Posts
    374
    Do some research on the Vltor A-5 system . It's a hybred between the carbine and rifle recoil set up . It is proprietary though.

  6. #6
    Plinker
    Join Date
    Oct 2013
    Location
    Indianapolis
    Posts
    226
    Try a carbine system with carbine spring and a heavy buffer. You can use a rifle length gas system with a carbine buffer system. They are somewhat related but the gas and buffer systems can be different.

  7. #7
    Marksman
    Join Date
    Jun 2012
    Location
    Hendricks County
    Posts
    671
    Quote Originally Posted by BIGE7.62 View Post
    Do some research on the Vltor A-5 system . It's a hybred between the carbine and rifle recoil set up . It is proprietary though.
    BCM offers the Vltor buffer with their extension tube and other parts as a kit ... https://www.bravocompanyusa.com/BCM-...ediate-shk.htm


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