Hi Jerry, you are correct in that Dutch magazines, parts and pieces are as scarce as red frogs hairs... But, I think a DWM 1920 commercial mag could be substituted with a little outside work... welding, cutting and plating, etc.. The Dutch spring retainer type magazine bottoms, although no walk in the park, are do-able, and as mentioned earlier, I have done a few in the past.. They would look as did the original Dutch mag when finished, prior to the addition of the front retaining pin so many are modified to... Only newer!
....til...lat'r...GT