Just a quick render of a thing from another thing I've been working on. Koshyan machine gun from the early part of the 4th century. Used in some form or another as a general purpose machine gun by various militaries for many many years.
Made in Sketchup. Very crude model, nothing fancy; it's made to be used as reference for illustration.
Link
Scott Ruggels
Looks like a cross between a Degtyarev DP-28 and Captain Kirk's Phaser rifle
http://pdxretro.com/2013/04/star-trek-phaser-sold-at-auction/