Originally Posted by DWB

Hence the obvious case for owning one even if it is just to protect your home. You want to know your ass is covered with a weapon that is going to get the job done. If it's good enough for a Marine, it should be good enough for the people the Marines defend. They just need to be properly trained and responsible with them.

That said, I've personally never had more than a shotgun for home protection. But I can see the case for people wanting an assault rifle for home protection if they have experience with guns. If the military wants them to go into combat, then they are clearly an excellent choice of weapon.