From time to time I run across some deals on the 40's, but typically dislike the length. Just thought I'd check to see if anyone had done a thread on reducing the capacity/size of the 40's to something more bench friendly like 20 or 30rds? Seems like it might be simple enough to mill out the spot welds, shorten the mag, reweld, and tweek the spring? I know of, have, and have had good luck with the MKE mags-great mag at a great price. Just wanted to see if there were things to be learned before I chop on one of my metal 40's since I'm cheap that way but always looking for a project.