We tubed it just like thier doing on bolt action rifles. Except you dont have to glue recoil lug. It is grooved into the main housing. It shoots great and hardly moves. Yes it is a XP100 action, trigger and barrel.
That is a nice looking Tube Pistol you have there! I keep thinking of one made with a Carbon fiber tube and grip assembly with a light weight barrel and scope. A tall Harris bipod with the legs made of carbon fibre too. Would make a nice hunting rig.... It don't hurt to dream.lightbulb