Setting up a payment gateway on GunBroker is one of the most important decisions a gun seller or FFL can make — and the difference between Standard Checkout and Immediate Checkout directly affects how fast you get paid and how professional your listings look. In this episode of Firearm Payments 101, we break down how GunBroker payments work, which gateways are supported, and how to configure Immediate Checkout step by step.

We start with the distinction between a payment gateway and a merchant processor — because GunBroker lists them separately and a lot of sellers aren't sure why that matters. A payment gateway captures and transmits card data. A merchant processor manages your merchant account and moves funds into your bank. Some companies handle both. Knowing the difference helps you ask the right questions before you commit to a provider.