The Standard Infantry Rifle, as described by the author Max Brooks in his book 'World War Z'.
I've seen a lot of drawings and sketches of what the SIR would look like, but i've decided to give it a go myself.
The weapon is, such as the Vz. 58, both magazine and clip-fed, since Brooks described the weapon in the book as being loaded with clips, though that might mean stripper or en-bloc clips, as well as the common misconception for the designation of magazines.
The weapon on the bottom is a belt-fed variant, though not being mentioned in the book, i really like how it looks and wanted to keep it!
Feel free to comment, all criticism is welcome!
(Made in Dr. Noob's Pimp My Gun version 0.7.0.6)