M-2 Gun Un-jamming Tool Note: This item is currently in storage. This un-jamming tool was used by the donor's father, a B-17 tail gunner in Europe during World War II. The tool was handmade and used because the cold and gloves hampered dexterity. According to the donor, tools like this were common among aerial gunners during the war. Donated by Mr. Mark Jacques. Click here to return to the Featured Accessions index. Find Out More Related Fact Sheets Boeing B-17G Flying Fortress Note: The appearance of hyperlinks does not constitute endorsement by the National Museum of the USAF, the U.S. Air Force, or the Department of Defense, of the external website, or the information, products or services contained therein.