This missile is part of the Park Zone Corsair upgrade kit. This kit will make four missiles and although It is not a scale model set they do look right under the wings of Park zones Corsair, Mustang, and T-28.
the missles measures 5 1/2 inch long with a Dia. of 3/8 inch
Molded with .030 white plastic makes painting not necessary. Assembly instructions can be found in the instructions section under the banner; look in the corsair upgrade instructions for details.
Compatible parts for this missile size is:
Pilot P/N 1005-2,
Drop tank P/N 1035-3,
Bombs P/N 1037-3
Punch the part number in the search block and it will take you straight to it.