Odin Innovations M12 Sidewinder Speed loader - TanFeatures 1600 round capacity Compact size allows the M12 to fit in a standard double stack M4 M16 magazine pouch Each rotation of the crank loads 12 BBs Integrated winding clutch prevents magazine overfilling The M12 Sidewinder is an essential piece of gear for every airsoft player's kit. With the quick spin of a crank, almost any M4 mid cap magazine can be fully loaded in under 5 seconds. The compact size of the M12 Sidewinder perfectly fits inside