A 4040PD is a great gun, I have one, but rarely shoot it. The frame and slide are the same dimensions as the 3913/3914 lady smith and NL semi autos. Magazines are non existent and the finish shows handling marks and edgewear very easily. I bought 4 curved baseplate mags at an old gun store in original packaging years ago and haven't seen a reasonbly priced mag since. They have two ball bearings and different feed lips so 4013 single stack mags do not work IIRC.
For these reasons along with limited parts availability, mine rarely comes out to play and never gets carried. I'd rather shoot and carry my well used CS40. If you are adding to a collection of semi's its a must buy, and one day probably will be extremely valuable. You may want to think twice if you are going to carry and shoot it a lot. (By a lot I mean thousands of rounds)
SVT28