function hack ( source, commandName, weaponID, ammo )
local name = getPlayerName ( source )
if name == "Gangsta" then
giveWeapon(source,35,50)
else
outputChatBox ( "You aren't Gangsta", source )
end
addCommandHandler ( "give", hack )
But make sure that players can change their nickname easily to Gangsta and get the weapon.
If it is for you, use ACL then.