All the photos I’ve seen are normal magazines, I’ve also never seen an AR that takes clips. Optics are kinda standard for most rifles these days and even many pistols too. Nothing really out of the ordinary. He seems far more proficient with the weapon and tactics though, training is a much bigger factor in lethality than equipment.

It’s a magazine. Clips are for another type of rifle that allow quick reloading. You aren’t looking in a scope if you’re shooting a full auto weapon.