The AR-15
The AR-15 semiauto rifle is my preferred weapon. This preference is based on several considerations
1) Large ammo capacity. The AR-15 has 30 round magazines, and the fact that it is a small caliber makes them relatively light to carry plenty of. The US Army standard is 210 rounds per individual, which is 7 magazines: six in the Load bearing Vest, and one in the weapon.
2) Light weight. The weapon itself weighs only 8 pounds, which makes it easy to carry.
3) Adaptable. There are very many different types of attachments you can get for an AR-15. Everything from scopes, hand rails, laser sights, multi-calibers, and”flare launchers.”
4) Powerful. While it is a small caliber, it is designed to do one thing: kill people. It may not be an impressive hole, but it does its job. And with a muzzle velocity of 3100 fps, it can defeat body armor.
I prefer the “M4″ variant of the AR-15, because it has a collapsible butt stock and a shorter barrel, which makes it good for close quarters combat.
Here are a few of the accessories that I find useful:
3 point sling
a scope
picitanny hand rails
a bipod