Yeah I'm guessing the the "A" stands for Auto - so the MP is the Pump... I've seen it called the MP-2 also, not sure why though.
yes you are correct is should say MP pump
BOOM! goes the dynamite!
http://sjhardware.com/store/modules....89d0ffedb325e2
looking forward to checking the mail next week!
Things either are what they appear to be;
or they neither are, nor appear to be;
or they are, and do not appear to be;
or they are not, and yet appear to be.