{"id":25914831,"date":"2026-10-01T11:47:33","date_gmt":"2026-10-01T09:47:33","guid":{"rendered":"https:\/\/migflug.com\/afterburner\/m61-vulcan-20mm-rotary-cannon-explained-f-16-f-15-f-22\/"},"modified":"2026-10-01T14:15:57","modified_gmt":"2026-10-01T12:15:57","slug":"m61-vulcan-20mm-rotary-cannon-explained-f-16-f-15-f-22","status":"publish","type":"post","link":"https:\/\/migflug.com\/afterburner\/m61-vulcan-20mm-rotary-cannon-explained-f-16-f-15-f-22\/","title":{"rendered":"M61 Vulcan: The Six-Barrel Gun That Arms America&#8217;s Fighters"},"content":{"rendered":"<style>.et_pb_title_container h1.entry-title { padding-top: 40px !important; }<\/style>\r\n\r\n<p>Squeeze the trigger in an F-16 and, a fraction of a second later, six barrels just behind the cockpit are spinning, and 20mm shells are leaving the aircraft at a rate of around 100 per second. The weapon is the M61 Vulcan, and for more than 65 years it has been the gun of American fighters.<\/p>\r\n\r\n<p>It was designed in the late 1940s, first flew in combat jets in the 1950s, and is still standard on the F-16, F-15, F\/A-18 and F-22. In 2026 it has found a new job: shooting down drones over Ukraine.<\/p>\r\n\r\n\r\n<div style=\"background:#f4f6f8;border-left:4px solid #5C91FF;padding:18px 22px;margin:20px 0 28px\"><p style=\"margin:0 0 8px;font-weight:700;color:#0d1117\">Quick Facts<\/p><ul style=\"margin:0;padding-left:18px\"><li style=\"margin:3px 0\"><strong>Maker:<\/strong> General Electric (now General Dynamics)<\/li><li style=\"margin:3px 0\"><strong>Programme:<\/strong> Project Vulcan, US Army contract, 1946<\/li><li style=\"margin:3px 0\"><strong>In service:<\/strong> 1959<\/li><li style=\"margin:3px 0\"><strong>Calibre:<\/strong> 20 x 102 mm<\/li><li style=\"margin:3px 0\"><strong>Barrels:<\/strong> Six, rotating (Gatling principle)<\/li><li style=\"margin:3px 0\"><strong>Rate of fire:<\/strong> About 6,000 rounds per minute; M61A2 up to 6,600<\/li><li style=\"margin:3px 0\"><strong>Weight:<\/strong> About 248 lb (112 kg) for the M61A1; the M61A2 is lighter<\/li><li style=\"margin:3px 0\"><strong>Muzzle velocity:<\/strong> About 3,450 ft\/s (1,050 m\/s) with PGU-28\/B<\/li><\/ul><\/div>\r\n\r\n\r\n<h2 style=\"padding-top:22px\">Why Six Barrels?<\/h2>\r\n\r\n<p>The M61 uses the same basic idea as Richard Gatling's 19th-century gun: several barrels rotate around a central axis, and each barrel fires only once per revolution. That spreads the heat and wear across six barrels, so the gun can sustain a rate of fire that would melt a single barrel in seconds.<\/p>\r\n\r\n<p>Unlike Gatling's hand-cranked original, the aircraft version is spun by the jet's hydraulic or electrical system, and the rounds are fired electrically. Because the barrels have to spin up, there is a tiny delay before full rate is reached.<\/p>\r\n\r\n\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/10\/f-104g-starfighter-m61-gun-bay-wernigerode.jpg\" alt=\"Open M61 gun bay of a Luftwaffe F-104G Starfighter\" style=\"width:100%;height:auto;max-width:100%;display:block\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">The M61 installation in a German F-104G Starfighter, the first aircraft to carry the Vulcan, on display at Wernigerode. Photo: Michael Wolf \/ Wikimedia Commons, CC BY-SA 3.0<\/figcaption><\/figure>\r\n\r\n\r\n<h2 style=\"padding-top:22px\">From the Starfighter to the Raptor<\/h2>\r\n\r\n<p>General Electric began work under Project Vulcan in 1946, after the US Army asked for a high-rate aircraft gun. The M61 entered service in 1959, and its first home was the <a href=\"https:\/\/migflug.com\/aircraft\/f-104-starfighter\/\">F-104 Starfighter<\/a>. It went on to arm the <a href=\"https:\/\/migflug.com\/aircraft\/f-105-thunderchief\/\">F-105 Thunderchief<\/a>, the F-4E Phantom, the <a href=\"https:\/\/migflug.com\/aircraft\/f-14-tomcat\/\">F-14 Tomcat<\/a>, the F-111, the <a href=\"https:\/\/migflug.com\/aircraft\/f-15-eagle\/\">F-15<\/a>, the <a href=\"https:\/\/migflug.com\/aircraft\/f-16-fighting-falcon\/\">F-16<\/a>, the F\/A-18 and the <a href=\"https:\/\/migflug.com\/aircraft\/f-22-raptor\/\">F-22 Raptor<\/a>. The B-52H carried one in its tail turret until the gunner's position was eliminated.<\/p>\r\n\r\n\r\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/ZlkMtyJgY20\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\" allowfullscreen><\/iframe><\/div>\r\n\r\n\r\n<p><em>AiTelly's animation shows how a modern rotary cannon feeds, fires and ejects rounds continuously.<\/em><\/p>\r\n\r\n<p>The F-4 story shows why the gun survived the missile age. Early Phantoms were designed as missile-only interceptors. Over Vietnam, crews found themselves too close for their missiles to work, and the F-4E was built with an internal M61. The lesson stuck: every frontline US fighter since has carried a gun.<\/p>\r\n\r\n<h2 style=\"padding-top:22px\">How Much Ammunition?<\/h2>\r\n\r\n<p>At 6,000 rounds a minute, ammunition disappears fast. The F-16 carries 511 rounds, the F-15 carries 940, and the F-22 carries 480 for its lighter M61A2. That is only a few seconds of continuous fire, so pilots shoot in short bursts measured in fractions of a second.<\/p>\r\n\r\n\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/10\/f-22-raptor-gun-firing-test-2003.jpg\" alt=\"F-22 Raptor test-firing its internal 20mm cannon\" style=\"width:100%;height:auto;max-width:100%;display:block\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">An F-22 Raptor test-fires its internal 20mm rotary cannon in 2003. The F-22 uses the lighter M61A2. Photo: Lockheed Martin via U.S. Air Force, public domain<\/figcaption><\/figure>\r\n\r\n\r\n<p>The Vulcan also left the aircraft world. The US Navy's Phalanx close-in weapon system, which shoots down incoming missiles and drones near ships, is built around the M61, and the Army used it in the M163 Vulcan Air Defense System on a tracked vehicle.<\/p>\r\n\r\n<h2 style=\"padding-top:22px\">A Drone Killer in 2026<\/h2>\r\n\r\n<p>In an age of beyond-visual-range missiles, the gun might look old-fashioned. Ukraine shows why it is not. With AIM-9 and AIM-120 missiles in short supply, Ukrainian F-16 pilots are using the M61 to shoot down Russian drones, reportedly at about 150 rounds per kill. Against a cheap drone, a few thousand dollars' worth of 20mm ammunition is far better value than a missile costing hundreds of thousands.<\/p>\r\n\r\n<p>Eighty years after Project Vulcan began, the six-barrel gun is doing exactly what it was built for: putting a lot of metal in the air, very quickly, in the right place.<\/p>\r\n\r\n\r\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/K6RKxZyya3s\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\" allowfullscreen><\/iframe><\/div>\r\n\r\n\r\n<p><em>Sources: Wikipedia (M61 Vulcan, F-16, F-15, F-22), General Dynamics, Militarnyi, Bloomberg<\/em><\/p>\r\n\r\n\r\n<style>.mfq{margin:34px 0 8px}.mfq h2{font:26px\/1.3 \"Gilroy semiBold\",Helvetica,Arial,sans-serif;color:#0d1117;padding-top:22px;margin:0 0 6px}.mfq .qa details{border-top:1px solid #5C91FF;margin:0;padding:0}.mfq .qa details:last-of-type{border-bottom:1px solid #e2e7ee}.mfq .qa summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 26px;font:18px\/1.7 \"Gilroy semiBold\",Helvetica,Arial,sans-serif;color:#0d1117}.mfq .qa summary::-webkit-details-marker{display:none}.mfq .qa summary::after{content:\"+\";font:24px Helvetica,sans-serif;color:#3568e0;flex:0 0 auto}.mfq .qa details[open] summary::after{content:\"\\2013\"}.mfq .qa details:hover summary{color:#3568e0}.mfq .qa .a{font:16px\/1.7 \"Gilroy regular\",Helvetica,Arial,sans-serif;color:#454e5e;padding:0 26px 24px}.mfq .qa .a a{color:#3568e0}@media(max-width:680px){.mfq .qa summary{padding:18px 14px;font-size:17px}.mfq .qa .a{padding:0 14px 20px}}<\/style>\r\n\r\n\r\n<section class=\"mfq\"><h2>Frequently Asked Questions<\/h2><div class=\"qa\"><details open><summary>How fast does the M61 Vulcan fire?<\/summary><div class=\"a\">The M61 Vulcan fires at around 6,000 rounds per minute, about 100 rounds per second. The lighter M61A2 used on the F-22 and later F\/A-18s can reach up to about 6,600 rounds per minute.<\/div><\/details><details><summary>Why does the M61 Vulcan have six barrels?<\/summary><div class=\"a\">The M61 Vulcan uses the Gatling principle: six barrels rotate and each fires only once per revolution. Spreading the firing across six barrels limits heat and wear, allowing a very high sustained rate of fire.<\/div><\/details><details><summary>Which aircraft use the M61 Vulcan?<\/summary><div class=\"a\">The M61 Vulcan has armed the F-104 Starfighter, F-105 Thunderchief, F-4E Phantom, F-14 Tomcat, F-111, F-15 Eagle, F-16 Fighting Falcon, F\/A-18 Hornet and F-22 Raptor, as well as the tail turret of the B-52H.<\/div><\/details><details><summary>How many rounds does an F-16 carry?<\/summary><div class=\"a\">The F-16 carries 511 rounds of 20mm ammunition for its M61A1 Vulcan. The F-15 carries 940 rounds and the F-22 carries 480 rounds for its M61A2.<\/div><\/details><details><summary>Is the M61 Vulcan used against drones?<\/summary><div class=\"a\">Yes. In 2026 Ukrainian F-16 pilots have been using the M61 Vulcan to shoot down Russian drones because air-to-air missiles are scarce. Reports suggest an intercept uses around 150 rounds.<\/div><\/details><details><summary>Can I fly in an F-104 Starfighter?<\/summary><div class=\"a\">Yes. MiGFlug offers an <a href=\"https:\/\/migflug.com\/flights-prices\/f104-starfighter-flight\/\">F-104 Starfighter programme in Florida<\/a>, flying from the Kennedy Space Center. It is a three-day training course covering the fundamentals of flying the F-104, including a flight in the legendary Mach 2 jet that first carried the M61 Vulcan.<\/div><\/details><\/div><\/section>\r\n\r\n\r\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"How fast does the M61 Vulcan fire?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The M61 Vulcan fires at around 6,000 rounds per minute, about 100 rounds per second. The lighter M61A2 used on the F-22 and later F\/A-18s can reach up to about 6,600 rounds per minute.\"}},{\"@type\":\"Question\",\"name\":\"Why does the M61 Vulcan have six barrels?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The M61 Vulcan uses the Gatling principle: six barrels rotate and each fires only once per revolution. 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Reports suggest an intercept uses around 150 rounds.\"}},{\"@type\":\"Question\",\"name\":\"Can I fly in an F-104 Starfighter?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. MiGFlug offers an F-104 Starfighter programme in Florida, flying from the Kennedy Space Center. It is a three-day training course covering the fundamentals of flying the F-104, including a flight in the legendary Mach 2 jet that first carried the M61 Vulcan.\"}}]}<\/script><div style=\"background:#f0f4ff;border-left:4px solid #5C91FF;padding:16px 20px;margin:32px 0 8px\"><p style=\"margin:0 0 8px;font-weight:600;color:#333\">Related Posts<\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/ukraine-f-16-maintenance-crisis-20mm-ammunition-drones-wsj-2026\/\">Ukraine's F-16s: Half the Fleet Stuck in Maintenance, Guns Used on Drones<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/gau-8-avenger-cannon-a-10-warthog-explained\/\">The GAU-8 Avenger: The Cannon They Built a Plane Around<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/romania-f16-cannon-sea-drone-neptun-deep-2026\/\">Romanian F-16 Guns Down a Sea Drone<\/a><\/p><\/div>\r\n","protected":false},"excerpt":{"rendered":"<p>Squeeze the trigger in an F-16 and, a fraction of a second later, six barrels just behind the cockpit are spinning, and 20mm shells are leaving the aircraft at a rate of around 100 per second. The weapon is the M61 Vulcan, and for more than 65 years it has been the gun of American [&hellip;]<\/p>\n","protected":false},"author":23,"featured_media":25914465,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"editor_notices":[],"footnotes":""},"categories":[665,664],"tags":[],"class_list":["post-25914831","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aviation-world","category-military-aviation"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>M61 Vulcan: The Six-Barrel Fighter Gun Explained | MiGFlug<\/title>\n<meta name=\"description\" content=\"The M61 Vulcan explained: how the six-barrel 20mm gun fires 6,000 rounds a minute, which fighters carry it, and why it is now killing drones over Ukraine.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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