S&T MP40 / M12 / Sten High Cap Magazine (300 Rounds)

S&T MP40 / M12 / Sten High Cap Magazine (300 Rounds) Spare high capacity magazine for MP40, Sten and M12 AEGs. These will fit most brands except SRC. Holds 300 rounds and has a sheet metal casing with plastic internals. Features: Metal casing Plastic internals 300 BB capacity Fits AGM & S&T