Gun was built from an ICS CXP and customized internally and externally. In really good condition externally and internally. This is practically a god gun. YES it takes m4 mags NO PARTING *suppressor NOT included* Has deans connection works best with 7.4 lipo Internal upgrades: .shs high speed piston .shs delay chip .silent piston head .lonex high speed/high torque motor .angel custom custom fitted tight bore inner barrel External upgrades: .custom fitted LR300 stock .colt licensed metal lower receiver .expanded handguard battery storage compartment Comes with: Gun ak74u flashhider M4 to mp5 adapter 5 mp5 midcaps 2 m4 high caps