Robbers attacked an elderly gun collector in his western Pennsylvania home and escaped with an arsenal of 31 firearms, at least 14 of which are still missing.

Three armed men wearing masks kicked in the door of the 71-year-old man's house in Sharon, 75 miles northwest of Pittsburgh and took firearms including an AK-47, handguns, rifles, shotguns, other semi-automatic weapons, ammunition and historic pistols, police chief Michael Menster said.

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