PAK means blank, so it would be blank ammo.
No.
It can.
metal
The 'ammo' is the electrical charge that zaps your attacker.
Ball, blank, tracer are a few.
A case is made with no projectile, loaded with powder, and crimped at the end.
TBI - "Trail Blazin Innovations" - is among several companies which carry and market blank ammunition. See related link 'TBI - blanks, blank ammo'
Yes. However, semi-autos will normally not function
30 ammo per clip and maximum ammo is 210 (including 30 inside the clip)
There are hundreds of slightly different types of ammo. For rifles, the most common are ball, blank, tracer, armor piercing, incendiary, frangible and dummy.
One that has live ammo inside and ready to shoot.