So anyone with a Savage Axis short action knows about those cheap garbage 4 round flush mags that cost $40+ a piece. Well my rear clip broke and mag would fall out after every shot so decided was going to repair, which evolved a bit into a custom box mag. There are no OEM mags of higher capacity and I didn't want to spend 120+ from some basement shop on internet. The mags that do exist seem to be made with cut down G36 mags. My approach utilized a 10 round 762 PMAG I had from my days in liberal f&^% land that was sitting in my drawer. I plan on doing the same eventually with a similarly neutered Hex mag. Any way some of the tools of the job: -files -hacksaw blade -dremel with stone, sand and cutting wheels -savage mag + desired box mag -nails, or pins/rivets etc -drill bits of various sizes 1: remove base plate from axis mag. starting with cutting wheel, remove a square workspace in the baseplate. I then used hacksaw blade to carve out most of the remaining meat. Then file closely to dimensions needed. ****note, do not overdue any one past. taking off too much can ruin things quickly, best to make it an iterative process. 2. Using cutting wheel to remove the lips from PMAG. File and/or Dremel to this the top dimensions a bit for fit. calipers can be very helpful for this project... 3. The PMG follower will need to be filed/sanded to be more appropriately shaped for the interior geometry of the axis mag. I drilled out the entirety of the front guide since the follower eventually rises above the mag guise tab (will snag on way back down if dont). Also need to add some side counters to match the axis mag. 4. Locate the best placement for some pins (I used nails cut down with cutting wheel) and tap some hole with drill in both the axis base plate and the top of pmag.. I used 1/16 bit --ideal if smaller than what you need so there is a lot of tension. I used vise to press the iced together with the pins. I may add more, but right now have 4 (2 in the front, 2 on rear). this may compress mag a bit, continue to optimize filing until the follower moves freely up and down the entire length of chimeric mag. 5. File down the pins so all is flush.test, fit, tweak as needed. The last step, which I have not yet done as I would like to evaluate a bit more before setting in stone, will be to use some strong epoxy to provide additional structural integrity. Then I will likely paint the mag to clean it up a little.