Actually M855 (green tip) is not true armor piercing. It was developed due to the M193 (lead core) not having enough penetration when dealing with vehicles. A true armor piercing round has a black tip and most of the time a tungsten core versus the steel core in the M855.
I have a supply of both as well as some other colored tip ammunition that can do some really cool stuff. All sealed up waiting for the
apocalypse. //BLASTEM'// //ZOMBIE2//
As for the heavy artillery I don't have any issues with ownership of planes, tanks, or ships, or any of the toys they come with. As long as you are a responsible citizen and do not infringe upon anothers rights. The Constitution was written for the civilian ownership of armaments to be deployed in case of war. Up until after the war of northern aggression all warships, cannons, and mortars were owned by private citizens. It was during that time period that we started seeing more mass production of weapons for military service.
I would love to have an M777 to launch softballs with out of my front yard.