Tactical Operations.

A modpack for Minecraft that allows the use of guns, old and current. The pack uses Timeless and Classic and it's addon, allowing a completely new arrangement of Firearms and weapons. It also adds mods that allow you to have an ultimately better Vanilla run like Farmer's Delight and way more. 

You can do everything from going through Biomes across the world with Biomes O' Plenty, raid Sky villages with your own vehicles, and create guns all the way from Muskets to Railguns anything can be possible if you put your mind to it.