Hey! Yes, there are brad nailers that can be used on concrete. They make slightly larger holes than a regular brad nailer, but you can fill in the holes with spackle if you think the holes are too big and don't want them there. They probably cost a lot but can surely be rented. I've only used such ones at work, and the company owns them, so I have no idea about the price. But check with some rental companies 👍