First M249/MK46 in 5.45 X 39mm

Discussion in 'Build It Yourself' started by sharky47, Nov 5, 2013.

  1. sharky47 Active Member

    Member Since:
    Nov 1, 2012
    Message Count:
    162
    This is #1 of the two 5.45 barrels US MGA asked me to make, #2 is currently waiting on backordered blanks.

    They are using M27 links, but they did make a simple machine to expand them so the belt wouldn't be too stiff. I had to bore out the bolt face about .020 and they had to make some adjustments to the feed tray, but other than that - pretty strait forward.

    The barrel I made using a true 5.45 blank from Green Mountain, gas block and extension was reclaimed from a standard 18" barrel. Bolt is a true MK46 with the hard chrome treatment, supposedly made for the seals or something, whatever - nice bolt though for sure. It's 17" long, 1/2 X 28 muzzle threads, not much else to it.

    I am also making a couple in 6.8 SPC2 and one for me in 6.5 Grendel, both of those will feed from RPD belts with the conversion package the MGA already makes for their 7.62 x 39mm kits.

  2. rjburk New Member

    Member Since:
    Jan 16, 2014
    Message Count:
    6
    I carried a M249 Shorty in AStan and for me I would have to ask why ? 249 is already a great machinegun as is.......
  3. sharky47 Active Member

    Member Since:
    Nov 1, 2012
    Message Count:
    162
    No doubt - it's a cool machine.

    To answer your question, the 5.45 conversion is mainly targeted towards two group of people.

    1. Machinegun dealers that like to go to shoots and burn up a bunch of cheap ammo.

    2. Rental ranges that like to burn up a bunch of cheap ammo.


    There are some clients that are interested in the 6.8, we'll see if they are interested enough to actually pay for some soon enough. The 6.5 Grendel is for my personal gun, building that one simply "because I can" and to shut up the arm chair warriors that say it can't be done.
  4. rjburk New Member

    Member Since:
    Jan 16, 2014
    Message Count:
    6
    I can understand 6.5/6.8 simply because you will have better performance/energy than 5.56 in a small package.....
  5. sharky47 Active Member

    Member Since:
    Nov 1, 2012
    Message Count:
    162
    6.8 barrels were tested last weekend and worked just fine! As soon as I get the video, I'll post a link...

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