Jg m4 ris

Discussion in 'Gun Building, Modifications & Repairs' started by alek9952, Dec 3, 2012.

  1. alek9952

    alek9952 New Member

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  2. alex

    alex New Member

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    the JG s-system ris supports the outer barrel. this is what stabilizes it and gives better consistent shots over other s-systems.

    when removing the s-system, you have two options: chopping the long top rail or replacing it with a standard JG top rail. removing the RIS will expose an opening on the top receiver.