Here’s what I did with my gun safe. I wanted the AR15 and 870 where I could easily access them. I used one of the large molle pieces made for a Pelican case to hold the two long guns. You can see the metal buttstock cuffs at the bottom and the two large rubber clamps hold them in place. Orange tape around the releases.
Then another molle piece above.
They make awesome gear and are a pleasure to deal with!
I’m still working on my truck and I have a couple of kayaks that will each have some Grayman molle in them soon.