Refurbished Beta-C Mags "might" just be a law enforcement pre-ban trade in item.
Agencies get rid of them, change weapons platforms, the get "used up", whatever.
Then "someone" buys them (verified pre-ban only) from law enforcement agencies (probably some sort of a trade-in for a new Beta-C and/or some cash thrown in), "someone" sends them off to Beta Mag to be refurbished (price is probably based on how much of the actual mag needs to be "refurbished"), then "someone" sells them for a GREAT price to guys like us who can't buy NEW Beta-C Mags.
It takes about 5 minutes to load one using the 5 round loose bullet pusher, and about 2 minutes to load one using the striper clip attachment.
I don't think that they are marked "refurbished" if they have been refurbished.
If you wanted to know you could call Beta-C and ask if the mag in question is a TRUE pre-ban and if it has ever been refurbished.
Each Beta-C mag has a serial number, and Beta-C has an accurate inventory of them (ie date first sold, if refurbished, if any warrenty work performed).
If you ever see one for sale without the certificate of "pre-banned-ness" check to make sure that a "low-life" hasen't marked out or destroyed the serial number and the "For LEO and MILITARY Use Only" markings.
I suggest that if you are in the market for one you give Ruben a call or drop him an email.
He will treat you right!