The Bushmaster a variant of a type of gun called the AR-15 ... which was designed and developed for military use roughly during the Vietnam War perio… - Tom Diaz

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The Bushmaster a variant of a type of gun called the AR-15 ... which was designed and developed for military use roughly during the Vietnam War period. It is one of a variety of assault rifles that militaries of the world developed when they realized that most soldiers do not — when they're engaged in combat — do not take accurate aim, do not fire at long distances, but rather just spray bullets in the general direction of the enemy at short to medium range. When the military accepted this as a fact — that soldiers are not marksmen, and they tend to just fire in bursts at ambiguous targets, and in fact most battlefield injuries are the result of just being where the bullet is and not someone actually aiming at you — the militaries of the world said, 'OK, we need a type of gun to give our soldiers that will do just that.' ... This was the genesis of the assault rifle. The first one was developed by the Germans in 1944. It was called the StG-44. The Soviet army quickly ... made a design similar to it, which is called the AK-47, probably the most widely used rifle in the world.