I was assembling my Raygun when I noticed a pretty massive gap between the trigger guard and the handles were they hold together. Wasn’t sure if this was an intentional design or not. Doesn’t really make too much sense to me Why it wouldn’t have a decent fit.
if this is intentional is there another version of the stl were it fits a bit better? Other than this little detail this model is great!

My models have a snug fit, but that much of a gap is definitely excessive. I did leave a larger tolerance than usual because the support structure makes the surfaces sag. What version of the STL file folder did you download? I might remember having the issue early on, but fixing it in later versions.
I only have the most recent version available for download. The other possible explanation is that your printer/slicer has better support structure that doesn't sag. What printer/slicer combo are you using?