MSR water treatment system.  Probably 25 years old.  Mine is an older version of one shown in the photo.  Only used a handful of times.  Works similar to the current MiniWorks.  Believe it’s fully functional, although I new filter would be required.   It takes the same filter as the MiniWorks.

Hate to throw it out, but I will not be using it.

Free, just looking for the cost of shipping.