The breech block is very strong, regulator well designed and precise, trigger is very light and smooth, and stock has about every adjustment possible. It SHOULD be very good. I struggle with mine. I shot a USFT to win the Open class in the 2018 Nationals but started using the Tsar shortly after. I did replace the barrel on mine (20 ft lb model)and it's pretty impeccably accurate with 10.3s and 13.4s. I really feel that it's a great rifle... I just still have things I need to take care of.... tuning wise. Mine wastes a lot of air and only gets 40 shots from a 220 bar fill. The air waste makes it loud and has a lot of muzzle jump which I apparently have difficulty controlling. Another Tsar shooter does pretty well most of the time and his is much quieter and less difficult to control.
Hopefully none of this is a deterrent to acquiring one of these fine rifles. They are built VERY well.... otherwise I wouldn't be bothering with it.
For another suggestion... USFTs are second only to the Thomas for solid construction and accuracy capability. Also, Daystate has the Red Wolf Ft or whatever the name is. Lauren shoots the original in our club and it's QUITE nice .... just spendy.
Hope this helps.
Bob
