These are amazing. They are very sturdy and extremely easy to install. I had built out a wall with wood slat to look real nice and then added these in for each gun to be displayed on that wall, I could not be more happy with it. I like how it allows you to easily adjust hight and width for each different gun while locking them into place so they can not fall. The price point is also very hard to argue against ($11 on Amazon).
While there are nicer mounts, they are not as versatile as these so really nothing bad to say about them. I highly recommend.