MK12 MOD1 UPPER


Design your MK12 package from the following options.


Please note that each of these options is a custom built item; the options, below, are possibilities.  If you would like some other combination of accessories, or  parts added or deleted, please contact us for a quote.  Shipping and insurance are additional.

As of 10/15/20 I have some 6ARC barrels contoured to same specs as the 5.56 MK12 barrels — I can build you a MK12 for Hornady’s new rifle cartridge — let me know if of interest…I have AE brakes suitable for the 6mm round.


OPTION 1    @      $1580.00


   -- Premium air-gauged Douglas stainless barrel 1/7 twist

    -- Crane style low profile gas block

    -- M4 extended feed ramps

    -- Rifle length gas tube

    -- AR15 bolt carrier and MPI inspected bolt from Young Manufacturing       

    -- PRI gas buster charging handle

    -- Ops Inc. muzzle brake and collar

    -- KAC free float long RAS hand guard


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© KJ O'Neill 2012