I didn't know much about filters before ordering these, so I had to do a little research on how to use them properly with my Action 3. However once I kind of understood how to use them, I was very happy with their performance.

There are several other Action 3 filters available, and they all pretty much have the same kinds of filters in them. The reason I am giving these four stars is because these have two small drawbacks compared to other filters I have tested but are close to the same cost.

First, in this set of filters, there is no non-filtered replacement, which others have come with. For me, I like having the backup of having a non-filter cover included if I'm swapping filters around because you never know when you might drop one or accidentally scratch something. But if you're not worried about that then that's not a concern

The only other drawback is that other filters I have tested have come in a much smaller case. The case that comes with this one is pretty large given the filters themselves are pretty small. The pack takes up a lot of space in a backpack or sling, which can be irritating if you're trying to limit the size and weight of your loadout.

Overall, these work really well, but I recommend looking around a little before you decide to buy these. You might find another set that would work better for your needs.