---
title: Multiple Calibers
url: https://www.fastbound.com/faq/multiple-calibers/
description: "The caliber type “Multi” should only be used for frames/receivers that do not have a barrel attached. As soon as a barrel is attached, you must use the specific barrel caliber when making A&D entries (e.g. 9MM, 12GA, 5.56 NATO). If the firearm has multiple barrels then you would need to record all barrel calibers… Continue reading Multiple Calibers"
---

The caliber type “Multi” should only be used for frames/receivers that do not have a barrel attached. As soon as a barrel is attached, you must use the specific barrel caliber when making A&D entries (e.g. 9MM, 12GA, 5.56 NATO). If the firearm has multiple barrels then you would need to record all barrel calibers (e.g. 40S&W/9MM).

For more information consult the FFLGuard Help Desk

FFLGuard QuickTips legal disclaimer