REVANCHIST Aluminum Outer Barrel for Marui M4 MWS MTR GBBR - Black

Perfect fit design for Hopup Unit , more accurate Perfect fit design for outer barrel, did not shake anymore , more accurate Come with two adaptor to make different length for the outer barrel ( such as 6.5 / 7 inch , 7.5 / 8 inch etc. ) For Tokyo Marui TM MWS / MTR GBBR