Full service / rebuild of a S400 and Huma regulator

Hi guys, different one for you here today just a full service and rebuild of a .22 S400 along with the Huma reg that's installed, the rifle has been left standing for a number of years now and is good need of a service. very pleased with the results. Thanks for watching. Cloverleafs post on the Firing valve.: https://www.airgunforum.co.uk/community/index.php?threads%2Fair-arms-400-500-series-exhaust-valve-head-extrusion-muzzle-energy-loss-and-general-crapness.171092%2F