I hope to go back and add more detail as floaters later. I also now see some proportions that I missed, as well as one part of the mesh that is crooked in the side view.
I did the gun at home last night, I strayed a bit from reference and I will try to make it match more now. I have a little over 5 hours until turn in, in this time I am going to add as many floaters as I can as well as go over my edges and play with them until they are as soft as a kitten. Thank you all for the advice!