FN FNS-9 Concealed Carry Holster Our FN FNS-9 Compact holster was designed and crafted using our high-tech proprietary process to exacting specifications. We’re so confident in our FN FNS-9 concealed carry holsters that we back them up with a lifetime warranty and 30-day free returns. The Base FN FNS-9 Compact IWB holster is designed for EDC and all-day comfort. It can be worn cross-draw, appendix, strong side, or all the way to small of the back. Our FN FNS-9 concealed carry holster fully protects the trigger and mag release for ultimate safety.