The CSO DLC Old Guns Addon expands your Bedrock arsenal by injecting a heavy lineup of classic military hardware directly into your world, but it relies entirely on a strict dependency structure. Because this .mcaddon functions as an official expansion pack, you absolutely cannot run it as a standalone modification. You have to download and enable the core Actual Guns CSO behavior and resource packs first, which provide the underlying framework that stops these weapons from just acting like clunky, retextured vanilla bows. Once the base files are loaded, this DLC natively hooks into that existing architecture, dropping fully modeled assault rifles, sidearms, and SMGs directly into your survival maps or custom PvP arenas.