I love the M4 rail wallet. It's light, it's tough, it's customizable, and it's easy to wear on my EDC crossbody strap. I love it so much I ended up getting the M4 bifold attachment, pocket clip, custom rails, and host of accessories almost immediately after receiving it. While I loved the bifold and pocket clip, I realized that the base model was already perfect for my situation (I have two door cards and it's super convenient to just flip the wallet over depending on the scanner). If Dango made...