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Thread: Colt OEM 2 = MK18

  1. #21
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    Quote Originally Posted by SeriousStudent View Post
    Who did your barrel work? Just curious.
    I sent mine to ADCO. Little over a week round trip. Did a nice job.

  2. #22
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    I would take Pitts over specialized armament right now if what I heard about them pretty much opening up every one they cut down to their specs that are over .070 are true.


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  3. #23
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    Quote Originally Posted by jstalford View Post
    I would take Pitts over specialized armament right now if what I heard about them pretty much opening up every one they cut down to their specs that are over .070 are true.


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    Not sure. What did you hear, and are you saying that opening the gas port to .070" is bad? I work with all these guys, and they all do a great job. Only SA can re-stamp the barrels.

  4. #24
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    I heard that they Open up the cut and non cut 10.3 to over the .070 crane spec to increase reliability.


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  5. #25
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    Colt OEM 2 = MK18

    Commercially available Colt factory 10.3" are larger than 0.070.

    The best option, IMO, is to cut down a 16".


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    Last edited by scooter22; 09-12-17 at 16:27.

  6. #26
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    Quote Originally Posted by jstalford View Post
    I heard that they Open up the cut and non cut 10.3 to over the .070 crane spec to increase reliability.


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    They will do whatever you ask. I am not sure what they do for the stock barrel they sell. You could be right. I am not sure why SA would do that. I can tell you I have had them cut 16" barrels and I specified the gas port.


    Quote Originally Posted by scooter22 View Post
    Commercially available Colt factory 10.3" are larger than 0.070.

    The best option, IMO, is to cut down a 16".


    Official Kremlin Transmission
    Not sure about that. I know Colt typically has run smaller than other commercial barrels. I know DD had been running larger ports in commercial barrels, and had some issues. To be fair, I am not aware of any Colt 10.3" barrels being "commercially available." To my understanding, they are made for military, and are sold commercially when they have capacity, and then, they made to .070" spec. Maybe there is another 10.3" Colt barrel out there. I have tried to find Colt 10.3" barrels form some time, and there are none available. Guys like Grant, SA, and AU all get special goodies from Colt, that I would not call commercially available.

  7. #27
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    Quote Originally Posted by NongShim View Post
    Real mk18 are cut down Colts, so that's actually pretty accurate for a clone.
    The first Mk18s had cut-down M4 barrels. Eventually, Colt was able to produce 10.3" barrels for the Mk18 program. In light of this, cutting down a Colt M4 barrel to 10.3" would be correct for some Mk18 clones just as the LMT 10.5" barreled uppers would be correct for some.
    "A Bad Day At The Range Is Better Than A Great Day Working"

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  8. #28
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    I will maybe measure mine if I can find some pin gauges. It will be a while though as it's assembled and I don't want to take it off


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  9. #29
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    Quote Originally Posted by jpmuscle View Post
    ...
    ...
    Standby on pics
    Bruh. I'm tight in the pants over this. Want/need pics. How much did you invest in this project? I am thinking that my next project, after my bolt gun, will be a shorty upper or an SPR upper... This is definitely the kind of hammer-simple that I am into.

  10. #30
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    Quote Originally Posted by noonesshowmonkey View Post
    Bruh. I'm tight in the pants over this. Want/need pics. How much did you invest in this project? I am thinking that my next project, after my bolt gun, will be a shorty upper or an SPR upper... This is definitely the kind of hammer-simple that I am into.
    I got you bro. I'll get some updated ones.

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