okay so i have bin doin some research and found that wow uses .M2,if someone could port the m4 into 3dsmax and convert it to .m2 format, lol i just wanna spice up lil timmy's pea shooter on my twink. i think the hl2 engine uses .mdl. i think its possible. But i have not much time for that since i have long school and i go to Air Cadets. so erm. thx if ya achieve this.