Many of you will not like this !... My previous findings confirm it is a fact !!!

@AlanMcD To the contrary, the striker is an INTEGRAL part of the firing cycle. It’s what prevents/allows air to flow. The opening valve consists of 2 parts that when pressurized want to separate from each other allowing air to flow to the pellet. What’s holding this valve closed is the striker that is held back by the sear.

Noteworthy to mention about the closing valve is the fact that it never truly shuts off air flow like a conventional valve. There is a tiny slit in the valve face to allow for air flow to fill the opening valve. The closing valve is the first of its kind in the airgun industry. The opening valve however is a dump valve which has been around for a while.
 
Since the dawn of PCP airguns man has struggled with hammer bounce. Many tinkerers have spent countless hours daydreaming and machining devices to combat this problem in search of ultimate efficiency. (...)

Although huben has conquered this problem they created another problem by making it a semi auto that shoots from the mag. It won’t be as accurate as certain rifles that gently loe projectile into the barrel instead of rocketing the projectile into the barrel almost at the speed of sound. (...)
Of course I do not know what an EBR good shooter can do at 100 yards. I have never been at an air rifle competition..... BUT for my standards, the sidewinder is very accurate (notwithstanding the pellet fly from the magazine to the barrel at full speed), very accurate..... I have read that that accuracy problem was in first generation of Hubens, but for sure I have confirmed that is not present in the sidewinders.
 
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@AlanMcD The spring is also an integral part of the firing system. Without it the striker would not be able to return to its original position and the opening valve would not be sealed.

The spring, striker, opening valve, and closing valve are all interdependent. Take one out and the system does not work. The only piece that is not necessary for the firing system to work is the buffer that sits behind the striker spring.