Waterloo 1815 has a new Japanese WWII set out in soft plastic.
You get two sprues like this with one small 70mm gun. The plastic does not accept glue but the part of the gun fit together perfectly without glue.
Gun and crew of two. There is a third officer figure with binoculars you can add to the crew.
Five parts to make up the gun go together without glue about as fast as you can get the bits off the sprue.