P320 Spare Mag Carrier by 1 Pew 2 Pew This is the first thing I've ever designed and was made very crudely in Blender off of a P250 STL file before I knew how to use any CAD programs. But quite a few of ya'll have asked for this file so I'm making it public. Here's the link to the original P250 file I used: https://grabcad.com/library/sig-p250-1 The STEP file is included in that P250 file pack, but once again I didn't know how to use CAD when I made this so I don't have a STEP file of the spare mag design. I printed this rails up To remove the supports in the rear shelf that the FCU rides in, I had to use a dental pick and bend it sideways and dig the supports out. It's not easy, it might take a while to clear all the support material out of there. To help with the fitting of the FCU I also heated up the back shelf of the FCU and quickly and carefully assembled the FCU and take down lever. The P250 file pack that I linked above includes a printable support that you can gcode a pause function and install it but I was constantly fucking that up so I just used my method. DM me on Instagram @1pew2pew if you have any questions!