[hasha]

when the gun releases the shaft, the metal part of the trigger mechanism hits the plastic body and makes some noise. I glued a spongy plastic to the left side of this metal part so it is pressed by this spaonge . When you open the gun handle it is the only big metal part you will see. ALso I glued another plastic to the point where the released trigger hits the same metal part.
NOw when I pull the trigger I hear nothing. Also under water I like it that way. If you have time give it a try.