un Control: Fifty-two senators, 238 House members and 80,000 public comments have forced the ATF to pull back for "more study" its proposed ban on ammo for the AR-15, the leading gun for hunting and self-defense. The Second Amendment, written in the era of muskets, does not mention what arms we have the right to keep and bear. But we have an idea, based on how they were used: to protect their owners' homes, businesses, farms and families, and to resist the tyranny of government, which during the American Revolution was the British crown.