Great for saving room in a safe. The only thing to keep in mind is that the width of the slots is pretty narrow. If you own the typical narrow semi-auto glock, 1911 it's nice because they fit pretty snug and it maximizes space. However if you own anything with a magwell or thicker grip there is not enough width to get the gun in. The only other thing I've noticed is some very small/thin guns can tend to tip over into the next gun. If the dividers were a little higher that would not happen, but it also would make getting the guns out harder. I've toyed with the idea of making the barrel slot a "v" to hold the guns a little more securely or adding some foam to the dividers.