Yes, was aware of what a percussion system is. Was commenting on this statement;

"The dolphin hammer may have started with pinfires and continued over to percussion;"

In actuality, any system which detonates a combustible mixture by a blow is a percussion system, it is not confined to a ML'er. A pinfire is a percussion system as is a modern day Benelli. Admitting that percussion was initially used to differentiate from a flintlock, most systems which followed were percussion.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra