Actually, it's all in multisources, game_team_masters and trigger_autos... It just gives you wpns, at the start of the round and doesn't give any more during the round. I'm trying to make it team-specific, but I didn't figure out how yet...
At the start of the round, a trigger_auto is triggered. The triger_auto triggers a multisource, which triggers a game_team_master, which triggers the game_player equip. I'm experimenting with the team master to see if it's possible to make equipping team-specific.