Pistol Shotgun Semi Automatic Rifle Sniper Rifle SMG The addon from this post is small but very handy. Surely looking for some major weapon addon, you should follow the link and download ActualGuns for MCPE, which offers the largest number of weapons.
Better Guns is a lightweight weapon add-on for Bedrock Edition of Minecraft that carries only a few types of firearms, but they are all multiplayer friendly and can be used in battles between players.