It's "man" sized scale. It's scaled to the same proportions as the SM armor I am working on also for approximately 6'2". Needless to say it is still quite big. Ill take some measurements and put them up. The bolt pistol is to the same scale also.
I'v been looking over my as yet unfinished bolter and finding things I can do better or different heh. I was checking out screenshots from Space Marine looking for additional details and saw some things in textures that I liked. Circled in red on this pic. I decided to recut some new receivers with those details in them.
Here is the bolter with all the large pieces pretty much done. These are upside down because the handle is going to be cast separately (and will work for both bolter and bolt pistol) so it is not attached. Now on to some more of the detail work with styrene. Anyone have experience attaching styrene to foam? Was thinking of trying hot glue.