They are worth it IMO. The 3 I have are as accurate as I could hope for in a factory rig. They all do sub MOA without question and at times if everything goes right they have all shot sub 1/2moa for 5 shots.
Nice thing about them is that if they shoot you don't need to change anything on them except for maybe adjust the trigger which is not hard to do. Worst case if it doesn't shoot to your liking just screw a new tube of your choice on there.
