Originally Posted by Enkidu
The fact that they have barrels called "smoker barrels' probably means they are unlined. To be sure, just call them and ask.
Hover your mouse over the second to last pic and you will see the one I am referring to.
FYI, when I called Apex here in Los Angeles, they also have a refurbished drum that they refer to as a smoker barrel (and it is also $35) and they verified that it is unlined and has been sand-blasted. I am guessing that a simple call to the drum company in KC will verify whether or not their smoker barrel is similarly unlined.