HK MR556 Competition...do I want to buy it?
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Thread: HK MR556 Competition...do I want to buy it?

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    Default HK MR556 Competition...do I want to buy it?

    LGS ahs a new old stock Competition model. Do I want it?...well I mean of course I want it but should I buy it? What are the difference between it and the MR 556 standard model? 1 review I read states they have a cold hammer forged barrel? Any other differences? Will the RAHG and G rail fit on it?

    Thanks!!

    $2400 plus tax.
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    I'd get the A1 if I were you. The competition doesnt come with the E1 buttstock. Dont worry about the barrel because youll find yourself buying a 416 upper once the addiction sets in
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    Quote Originally Posted by yz125racer View Post
    I'd get the A1 if I were you. The competition doesnt come with the E1 buttstock. Dont worry about the barrel because youll find yourself buying a 416 upper once the addiction sets in
    What are/were the barrel differences?
    Is the Competition model still being manufactured?

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    Quote Originally Posted by kong View Post
    LGS ahs a new old stock Competition model. Do I want it?...well I mean of course I want it but should I buy it? What are the difference between it and the MR 556 standard model? 1 review I read states they have a cold hammer forged barrel? Any other differences? Will the RAHG and G rail fit on it?

    Thanks!!

    $2400 plus tax.
    There are only minor differences.

    As stated above it comes with Magpul stock, also;

    Larger mage release bottom

    OSS Suppressor ready FH

    The absurd HK MRS rail (only sold in the US but a gigantic waste of a HG)

    I think that is about it. $2400 is a pretty good price. I’ve seen lower but not by much.

    I’d buy it if you want a 556. Especially if you are going to put a Geissele or a RAHG rail on it. You’ll probably want to replace the OSS FH as well.

    I really like the larger mag release button. I have 416 uppers on mine. I has had a Geissele FCG installed, added a RediMag bolt catch device and put a HK E1RAL stock on one and a black one on the other. I still have the Magpul stock that came with it.

    Is the buffer tube Mil Spec or commercial and what is the date code? I think you are better off with the Commercial buffer because obtaining Mil spec butt stocks from HK, particularly slimline, is proving difficult these days. YMMV
    Last edited by RegularGuy461969; 02-14-2020 at 03:40 PM.
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    Quote Originally Posted by TallPine View Post
    Quote Originally Posted by yz125racer View Post
    I'd get the A1 if I were you. The competition doesnt come with the E1 buttstock. Dont worry about the barrel because youll find yourself buying a 416 upper once the addiction sets in
    What are/were the barrel differences?
    Is the Competition model still being manufactured?
    .

    No barrel difference between A1 and Comp, only the FH per my above post.
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    If you can live with the word "COMPETITION" on the side of the magwell......I'd say get it.

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    Hope this isn't too much a hijack, but could you make an MR56A1 upper work on a full auto registered receiver? My thought was you'd need to have mill out the sear relief cuts on the bottom of the upper to clear the auto sear of the registered receiver lower, and then obtain a 416 full auto bolt carrier.

    Would this work?

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    Quote Originally Posted by TallPine View Post
    Hope this isn't too much a hijack, but could you make an MR56A1 upper work on a full auto registered receiver? My thought was you'd need to have mill out the sear relief cuts on the bottom of the upper to clear the auto sear of the registered receiver lower, and then obtain a 416 full auto bolt carrier.

    Would this work?
    It works if you cut the tab off the barrel extension and use a full auto carrier. But why would you ever want to run a mr upper on a receiver like that. The barrel lining isnt intended for full auto.

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    Why? Because its 'Merica and I can.lol
    I was just curious if it could be done and what would be required.
    Thx

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    Quote Originally Posted by TallPine View Post
    Why? Because its 'Merica and I can.lol
    I was just curious if it could be done and what would be required.
    Thx
    you could swap the barrel for one of the chrome lined produced by Nefarious Arms and be all set for full auto.

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