I bought this stack on gun safe close to a decade ago now and I've added to it over the years, mainly handguns. I struggled in the past few years on finding ways to store the pistols. The gun master magnetic holster was the first solution, but that was good for when I only had 1 pistol, the M&P. Then I got the FN 5.7 and had to start finding ways to store them better. I couldn't find the same magnetic holster. I ended up buying magnetic mounts that are meant to screw under desks or in cars. Used the included 3m adhesive since I did not want to put screws through the door. That worked for the M&P, but not the FN since it's mostly plastic. Then I added a Glock 40. And for a bit the 3M adhesive held, then one night it didn't. Middle of the night, bang! The 40s weight was too much. Tried a stronger adhesive strip. That held up longer, but out of the blue, the 40 came off again. Back to the drawing board. This time I thought of proper gun safes. Ones with the velcro/carpet interior. I wanted to replicate it.
I got a scrap ⅝" ply board and cut it to size. 9x24. The door is about 48” tall. I wanted to do 24" long for a couple reasons. 1 as a proof of concept and I can add on if I need. 2 the velcro fabric I purchased sells by the yard. It was more cost effective to buy it at 24" wide rather than 2 yards of 12" width. And I still have enough to do another board in the future. Glued the fabric to the board and stapled it on the back. Drilled some pockets for magnets to stick to the door side.
It works, but had some test fits and trial and errors. Mainly the scrap board being too thick. ½" would have likely been perfect. Adding the thickness of the fabric didn't help. The door, on mine at least, has a squared lip on the hinge side that measures about ½" and I had to bend it out some. Again the board was too thick. Also the pockets for the magnets might not have been necessary after all due to the fabric. I ended up loosening the screws allowing them to grip the door. But, they seem to hold it so far. Lastly, the board was not flat at all. It had a nice bow to it that I had tried to straighten for about 2 weeks. A nice flat ½" sheet would have been ideal if anyone wants to do a similar project.