Why is this product not sold in the same types of containers?

I'd noticed that, too, and I think it's a bit odd. I think it'd be much better if they made them all the same as you suggested. I guess they figure they're just giving people a choice in the way the lube is disposed?

The Gun Oil lube bottles look pretty much the same except for size or if it has a pump. Personally it doesn't bother me what the bottle looks like. Some I am sure are easier to conceal in a pocket or purse for the purpose of travel. Others do to their size like the one I baught being 35 oz. looks like a shampoo bottle and you could probably have out in the open as long as someone didn't take to close a look at it. I am sure they had their reasons for making the bottles the way they did.