Tony gently lowered the rifle down on the small living room table, and set down three pieces of metal next to it.
"These are called 'en-bloc clips'. Each of them holds eight cartridges."
He opened the ammo box and showed Betty how to load an empty clip.
"Now, loading a full clip is the easiest thing in the world..." Tony put the rifle's butt against his thigh, and showed Betty how to load the clip into the rifle, simply pushing it down with his thumb.
Then he quickly moved his hand out of the way as the bolt snapped forward, closing the opening:
"There, see that? Normally you want to avoid that, else you risk getting the infamous 'garand thumb' - and believe me, you only need to get it once to remember it for a lifetime. Now, the proper way to avoid that is this..."
He showed her how to unload and reload the rifle a couple of times, pointing out that a round was automatically chambered each time, then handed her the rifle and an empty clip:
"There, try it out, then we'll see how to shoot it."