Lançar uma mágica é um tipo diferente de ação para manter uma mágica, portanto, não há nenhum dos mesmos requisitos para os componentes.
De acordo com as regras mágicas para duração da Concentração.
Concentration The spell lasts as long as you concentrate on it. Concentrating to maintain a spell is a standard action that does not provoke attacks of opportunity. Anything that could break your concentration when casting a spell can also break your concentration while you’re maintaining one, causing the spell to end. See concentration.
You can’t cast a spell while concentrating on another one. Some spells last for a short time after you cease concentrating.