6.04 SRS A1 G-spec Stainless Steel Upgrade Barrel 300mm

-AEG spec 300mm barrel for SRS A1 G-Spec

-also fits AEG and AEG type chamber rifles, example GHK, S&T M40a3

-Japan made 306 stainless steel raw tubes

-CNC made window and milled surfaces

-Compatible with Faceless PDI R-Hop