Paintball barrels are easy to install, and it will take you a few minutes to get it all lined up and screwed. Flat liner barrels are known to require an effort to connect, especially if you are a beginner. Always follow the instructions that the manufacturers deliver alongside the paintball barrel. Also, you can check the original manual that comes with the marker on how to go about setting up the paintball barrel you acquire. The internet has multiple resources that can help you in case you are stuck, including the manufacturer's support service, which is better placed to guide you on how to install the paintball barrel. To make the process effortless, ensure that you get a barrel that is compatible with your marker.