Here is a closer view of the blaster. I used the Nerf Nite Finder gun as a base, removed some parts with a saw, and sculpted the end to the correct shape. I was also going to correct the shape of the front of the gun, but I ran out of materials and decided it was close enough.
I did one layer of light gray paint, then three layers of white before adding shading and the red details.
Hopefully I will be wearing this to Phoenix Comiccon in May, buuuuut it is such a warm costume that I may just decide to take some pictures in it and wear another costume.