If you own a firearms business, you must obtain a Federal Firearms License to transact transfers. While you do not need to obtain an FFL if you only sell ammunition, you do need to obtain one if you intend to sell firearms. Therefore, an FFL must be obtained if you:If you intend to sell firearms for a profit, you need to obtain an FFL to do so legally. And because obtaining an FFL enables you to facilitate transfers, this is a service you may legally offer as a licensee. This article has been reviewed by Ryan Cleckner and is factually accurate as of July 25, 2022. Ryan Cleckner, the best-selling author of the Long Range Shooting Handbook and founder of Gun University and Rocket FFL, is a recognized firearms attorney specializing in firearms law/ATF compliance. Ryan has made appearances on the History channel as a sniper expert, and Fox as an industry expert.