This is an injection-plastic aircraft model kit.
From Minicraft Models:
The PBM was designed in the late 1930’s and first deployed in the early 1940’s as a sea based U.S. Navy patrol bomber and transport for men and material. The Mariner was also well suited for search and rescue operations. The PBM was a large aircraft carrying a crew of 7 to10 crewmen and a flight range of over 2000 miles.
This new 1/72 scale plastic kit represents the PBM-5 seaplane which was the single most produced aircraft in the Mariner family. This PBM-5 seaplane features new tooling for “beaching gear” and depth bombs for positioning in the fully detailed mariner Bomb bays. The new Minicraft PBM features recessed panel lines, detailed twin engines with position-able cowl flaps and control surfaces, newly tooled beaching gear and new markings for the PBM-5 “nightmare”.