From Halopedia, the Halo wiki
Tom Doyle is a 3-D artist and weapon designer extraordinaire who works for Bungie. He is from Detroit, MI, but graduated in 1998 from Full Sail Digital Media - Orlando, FL, with an Associate of Art Degree.
Tom is a big fan of the classic Halo weapons, such as the Covenant Type-50 particle beam rifle. "I wanted to go back and make everything better ... The Covenant sniper is one of my favorite weapons--it just feels so powerful. I wanted to emphasize that in the new version, so we're adding some detail that will really show off the building energy in the weapon."