We have progressed to working on the slicer settings making sure the model does not have any major defects before printing it for real. At this rate next week I should be printing it. Stay tuned as this project is coming along. Final round count will be determined by length of the mag over everything else. I am getting the length to be no more than the 33 round mag from Glock as this is generally accepted as the biggest a mag is comfortable to go with.