Here we have a diffrent set up for you this gun comes with two barrel set up the one with a muzzel brake has a26 inch barrel inc the muzzel and has a mod choke. The spare barrel set up is 30″ long and is imp cyl and needs to be adjusted to fit properly a minor task if you know this gun well. It is a tight fit and needs to be adjusted. The main set up is a very good fit and does not need any adjustment at all.