Recoil is not necessary for a rifle to function. It is a by product of the mass of the projecticle being sent down the bore by expanding gases of burning gun powder.
On some of the older rifles, they had a set trigger. You would pull it first to set the other trigger. The second trigger would be a hair trigger. It would have a very light pull. The first trigger...
This question comes is equivalent to asking what is law? What is its function?
Every society, even the most simple one, is in need of some form of organisation.
The members of a society need to...