All kidding' aside, how is it that those milodon aluminum bodied pumps don't get eaten up with steel cogs inside its guts?
That was what I was afraid of at first when I looked into them.
Perhaps there's a steel sleeve the protects the aluminum from the steel cogs?

Never mind, by now looking at the photo Hemi-itis has posted, I see that the steel cogs rotate in what looks to be a pressed in steel cog housing.