All you have to do is go on the weatherby website and read the details of the manufacturing process. Yes, weatherby vanguards barrels and actions are manufactured by the Howa machine company in Japan to weatherby specifications. The barrels and actions are shipping to weatherby for inspection and final assembly using weatherby stocks and their own two stage triggers. That's what the S2 stands for, two stage. And yes they are adjustable down to two and half lbs.