What is the intention of designing something capable of firing a projectile at high velocity?
Seriously, this argument is so stupid. Let me try.
Im a manufacturer that cuts wood at a specific size with the intention to use it as a door. It can and usually is used as a door, but doesn’t have to be.
It is a weapon. That is the intention of the tool.
A spade has the purpose of digging, just as the gun has the purpose of killing.