your honor, there is a gun lock on the exhibit. may i remove that so she can explain the function to the jury? >> yes, you may. >> all right. if you would. just -- >> give it to the deputy to make sure the gun is cleared. >> it is safe, your honor. >> all right. if you would explain to the mans of the jury how that firearm and anything else you need in terms of the magazine how it functions. >> absolutely. >> i'm go to start real quick with a basic definition for you. right here is what we call a cartridge. it is commonly referred to as a bullet, but it contains at the very top of the bullet the cartridge case at the head of primer and inside of it gunpowder. now these cartridges are loaded