I have the metal ammo cans but I've also been using something similar as in your link. I bought them about 5 years ago. The ones that I have are bright orange and were made as marine dry boxes for boating. They have a rubber seal around the lid and have worked well as ammo cans (if you can get past the color). There's a place on the latch for a padlock. I don't know if they were made by Plano or not, there is no name on them. They have worked well for me. When I first got them I was concerned that the plastic handle would not hold up under the weight, but that hasn't been the case, they've held up fine. Here's a pic.