The original model is awesome and I found that for my purposes I had to make a couple of changes. These are:
The author remixed this model.
Extended one of the narrower legs to allow it to hold rifles that are slightly out of balance from the muzzle end. It's more stable and doesn't tip when you have a flashlight or other attached. Also extended the neck for rifles with lower attachments to keep them clear of the surface. Removed the angle from the top to provide a smoother print finish without affecting function.