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RocK River Questions...

Discussion in 'GATE AR-15 Forum' started by gordo993, Jan 19, 2011.

  1. gordo993


    Jul 4, 2008
    St. Louis
    I am looking into using a Rock River LAR-15 Mid Length as a platform for my build, but looking on their website has generated a question - What's the difference between the A2 and the A4? THe A2 is heavier and a tad more expensive, but why?