i dont have 3d stuido max what elese can i use to make a silencer for a barret?

For that you must have 3d studio,because ghost r. just support this 3d software.Sorry but if you want to model something you must have 3d studio max

you can't make it but you can wait for a mod to come out with one in it...i think either the community mod or Stalker_zero's "sniper cannon" mod will have a really nice silenced m82 in it.

This beauty was modeled by my mate Black Sabbath...it will feature in Stalker Zero's Sniper Cannon mod..not sure about Community mod though....
Is that what you want, @SGT_Spear?