This is 3D printable model of the Defiant Class NX-74205 Defiant from the Star Trek. It is a kit. The different colored parts are separated for easier printing.
Pieces of some details need to be separated into separate models in the slicer ;)
In the suffix of the files, there are color codes:
g-grey
b-black
bl-blue
r-red
For the assembly, please have a look at the following video.