You can find weapon name (TTT) in <garrysmod>/gamemodes/terrortown/entities/weapons. The file name is what you use to "give" to someone. http://puu.sh/gP3c5/1157eb1789.png 

weapon_ttt_m16
weapon_zm_mac10
weapon_zm_rifle
weapon_zm_shotgun --HUGE
weapon_zm_sledge
weapon_ttt_aug
weapon_ttt_smg
weapon_ttt_mp5
weapon_ttt_galil
weapon_ttt_famas
weapon_ttt_pump
weapon_ttt_sg552
weapon_zm_pistol 
weapon_ttt_glock 
weapon_zm_revolver --Deagle
weapon_ttt_revolver  -- SW500
weapon_ttt_p228 -- P228
weapon_ttt_pistol -- USP
weapon_ttt_goldengun 
weapon_ttt_confgrenade --disco
weapon_ttt_smokegrenade 
weapon_zm_molotov --incend
weapon_ttt_binoculars
weapon_ttt_cse --visualizer
weapon_ttt_defuser
weapon_ttt_wtester --dna scan
weapon_ttt_teleport
weapon_nyangun
grapplehook
weapon_ttt_p90
weapon_ttt_ak47
weapon_ttt_stungun --UMP proto
weapon_ttt_health_station
weapon_ttt_push --Newton

Some referenced weapons (not default): http://steamcommunity.com/sharedfiles/filedetails/?id=245163710