In watching the vid XDman did insert a standard XDm mag in and it locked in fine. He then dropped it out using the frame mag release. So I'm confused when he said they won't work, because it sure did fit..
BUT, perhaps it is that a standard XDm mag could not be extracted by hand because of the flared mag well covers the older base pad entirely, whereas the new Elite base-pads would still allow for that plus the extra capacity.
Maybe he should clarify that.
In reading the Peak Performance article the mag body is the standard 19-rd XDm mag only with +1 & +3 extensions used to bump up the capacity to 20 & 22.