en fait pour la 4),
tu peux supprimer ou mettre des armes deja existantes dans la map,
en faisant cela :
voici les commandes pour les enlever (ds la console) :
//disable all items created by zYmO
//quake3
set disable_item_armor_shard 1
set disable_item_armor_combat 1
set disable_item_armor_body 1
set disable_item_health_small 1
set disable_item_health 1
set disable_item_health_large 1
set disable_item_health_mega 1
set disable_weapon_gauntlet 1
set disable_weapon_shotgun 1
set disable_weapon_machinegun 1
set disable_weapon_grenadelauncher 1
set disable_weapon_rocketlauncher 1
set disable_weapon_lightning 1
set disable_weapon_railgun 1
set disable_weapon_plasmagun 1
set disable_weapon_bfg 1
set disable_weapon_grapplinghook 1
set disable_ammo_shells 1
set disable_ammo_bullets 1
set disable_ammo_grenades 1
set disable_ammo_cells 1
set disable_ammo_lightning 1
set disable_ammo_rockets 1
set disable_ammo_slugs 1
set disable_ammo_bfg 1
set disable_holdable_teleporter 1
set disable_holdable_medkit 1
set disable_item_quad 1
set disable_item_enviro 1
set disable_item_haste 1
set disable_item_invis 1
set disable_item_regen 1
set disable_item_flight 1
set disable_team_CTF_redflag 1
set disable_team_CTF_blueflag 1
//missionpack
set disable_holdable_kamikaze 1
set disable_holdable_portal 1
set disable_holdable_invulnerability 1
set disable_ammo_nails 1
set disable_ammo_mines 1
set disable_ammo_belt 1
set disable_item_scout 1
set disable_item_guard 1
set disable_item_doubler 1
set disable_item_ammoregen 1
set disable_team_CTF_neutralflag 1
set disable_item_redcube 1
set disable_item_bluecube 1
set disable_weapon_nailgun 1
set disable_weapon_prox_launcher 1
set disable_weapon_chaingun 1
et pour les mettre :
//enable all items created by zYmO
//quake3
set disable_item_armor_shard 0
set disable_item_armor_combat 0
set disable_item_armor_body 0
set disable_item_health_small 0
set disable_item_health 0
set disable_item_health_large 0
set disable_item_health_mega 0
set disable_weapon_gauntlet 0
set disable_weapon_shotgun 0
set disable_weapon_machinegun 0
set disable_weapon_grenadelauncher 0
set disable_weapon_rocketlauncher 0
set disable_weapon_lightning 0
set disable_weapon_railgun 0
set disable_weapon_plasmagun 0
set disable_weapon_bfg 0
set disable_weapon_grapplinghook 0
set disable_ammo_shells 0
set disable_ammo_bullets 0
set disable_ammo_grenades 0
set disable_ammo_cells 0
set disable_ammo_lightning 0
set disable_ammo_rockets 0
set disable_ammo_slugs 0
set disable_ammo_bfg 0
set disable_holdable_teleporter 0
set disable_holdable_medkit 0
set disable_item_quad 0
set disable_item_enviro 0
set disable_item_haste 0
set disable_item_invis 0
set disable_item_regen 0
set disable_item_flight 0
set disable_team_CTF_redflag 0
set disable_team_CTF_blueflag 0
//missionpack
set disable_holdable_kamikaze 0
set disable_holdable_portal 0
set disable_holdable_invulnerability 0
set disable_ammo_nails 0
set disable_ammo_mines 0
set disable_ammo_belt 0
set disable_item_scout 0
set disable_item_guard 0
set disable_item_doubler 0
set disable_item_ammoregen 0
set disable_team_CTF_neutralflag 0
set disable_item_redcube 0
set disable_item_bluecube 0
set disable_weapon_nailgun 0
set disable_weapon_prox_launcher 0
set disable_weapon_chaingun 0
pas oublier de mettre le / avant la commande, et il faut redémarrer la map apres avoir tapé la commande.
mais pour mettre d´autres armes, on pourrait avec q3radiant et un bspconverter, mais c assez long, et au final il n´y a plus de textures dans la map... 
