So many weapons are available to buy, even if the stock runs out, all of the new equipment will just be a vote away.
And when the new stuff will stop coming, will start upgrading the stuff already available.
Talking about equipment, glasses improve hit, boots improve movement.
Although, gunners benefit from better Hit, they could benefit even more from better movement.
And why someone with big range, have better movement?
Because if, someone closes in, and one is better at range, then distancing oneself is quicker done if, one is faster.
Moving, to make more targets appear with-in range.