After testing all kinds of guns of this type, the seal was still very rarely the appointment, in addition to providing the most part, a plastic that can not bear to wear. Regarding the latter, it is very solid, well finished, with game or leakage at the gate or the base. When used with hard water, limescale may impede its correct operation, especially at the small red trigger (which avoids maintain the greatest pressure to ensure that the water). Think clean after a few months, especially if there is outside! Dismantling at the head is simple, a single screw in the center, a small room to block the pivot, provided with a spring. Be careful not to lose them. It will be noted in this connection that the red trigger actuated maximally provide a slightly lower rate actuation of the gray / yellow. My advice anyway product for those, like me, who were disappointed by a number of such guns. The price may discourage, but sustainability is really worth the trouble.