The Baseplate has to slide off. On the newer ones it is a little bit of a pain in the butt because they are made so cheaply. On the older ones, after pressing in on the "button" on the baseplate they slide right off. The part in question has to line up (with cut out in lower part of Magazine) and just goes right in from the side. The newer version does not have a "button" to be pushed in and so the baseplate has to be carefully persuaded off off. Basically, the older ones were designed to be disassembled , cleaned, repaired and reassembled easily whereas the newer versions were not (sort of disposable) but with some skill can successfully disassemble, clean, repair and put back together.

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