Thankfully, you can! The redstone machine gun, which I'll demonstrate, is essentially just a rapid pulsar attached to a dispenser full of arrows. Have you ever felt like you wanted to totally annihilate someone in Minecraft with a machine gun? Yeah, me, too.
For more information about the mod and its related files follow the second link on the right to view the official. The first link on the right will bring you to the download page for the mod and its related files.
TheGunMod TheGunMod allows users to create their own weapons for use in Minecraft.