You are looking for a "glock 9" firearm. based on what you know about how guns are measured, what does the "9" in the gun's name referring to?

Explanation:

There is no glock model 9, but if you are referring to the caliber this simply tells you the diameter of the projectile fired from the weapon is 9 millimeters.

answer; a muscle cell, another neuron and a of the above

sex cells are usually half's then they find another half and make a fertilize egg