Here is lil' something to "Celebrate 4k followers" I've been tinkering with this on and off when I've had the time.
Inspired by the "Mac 10 Race Gun" (The only info I could find here: http://www.fullautoclassics.com/soldinfo/Mac%2010.html)
~23k tris
5 Texture Sets (Mac-10, Extension Parts, Suppressor, Red-dot, Drum-mag)