Will only trizade for g series pistols. Comes with mags lots. Tight bore retract stock wired to deans. No idea on brand. Upper is metal foregrip is poly lower is thick poly like the real one. Mosfet is krytac 3034 standard protection mosfet no tricks just for longevity. Steel rack piston. Aoe. This thing is shimmed to perfection. Thought I had a regular stock but don't