Key Points and Summary: The A-10 Warthog was literally built around its GAU-8/A Avenger, a 30mm, seven-barrel cannon that spits depleted-uranium rounds at nearly 4,000 rpm and shreds armor with the famous “BRRRT.”
-Early flight tests in the 1970s exposed nasty problems—gun gas ingestion and residue on the canopy—but fixes turned the system into a reliable tank killer, proven spectacularly in Desert Storm.
-Years later, a contractor at Iraq’s Balad Airbase walked past fields of flipped and burned-out Saddam-era tanks, stark evidence of what the Avenger can do. The result: one of the most feared and iconic guns in modern airpower.
A-10 Warthog Visit: We Saw This In Person Back in July at the U.S. Air Force Museum
A-10 Warthog Bombs. Image Credit: National Security Journal.
A-10 Warthog NSJ Photos. Image taken on 7/20/2025.
A-10 Warthog National Security Journal Photo Essay Picture.
A-10 Warthog Cannon NSJ Photo. Taken at U.S. Air Force Museum on 7/19/2025.
A-10 Warthog National Security Journal Photo.
The Amazing Avenger Cannon of the A-10 Warthog
“Oh, I wish I had a gun just like the A-10/I’d be happy as a baby in a playpen/I’d mow ‘em down like a weed eater/With that 30 millimeter/I wish I had a gun just like the A-10.”
Thus goes the opening verse of “I Wish I Had a Gun Just the A-10,” a song by Dos Gringos, a rock band formed by two former U.S. Air Force F-16 pilots, Chris “Snooze” Kurek and Rob “Trip” Raymond in 2001.
In that same song, Snooze and Trip sing the praises of the F-15 Eagle, the F-15E Strike Eagle, the F/A-18 Hornet, and of course, their own beloved F-16 “Viper.” Their singling out of the A-10 Warthog and its gun, however, is quite telling.
It’s also quite appropriate to praise the one alongside the other, as the Warthog is built around its gun: the GAU-8/A 30-mm Avenger autocannon, famous for producing the legendary “BRRRT!” sound effect.
GAU-8 Avenger Tech Specs
-Manufacturer: General Electric
-Caliber: 30 mm (1.18 inches)
-Number of Barrels: 7
-Overall Length: 19 ft 10.5 in (6.06 m)
-Barrell Length: 90.5 in (2.30 m)
-Weight: 619.5 lb (281 kg)
-Muzzle Velocity: 3,324 fps (1,010 m/s)
-Rate of Fire: 3,900 rounds per minute (rpm)
-Effective Range: 4,000 ft (1,220 m)
-Maximum Range: Over 12,000 ft (3,660 m)
Not a New Concept
Warbirds had been built around guns before.
In World War II, the Bell P-39 Airacobra had the 37-mm M4 cannon.
This was even bigger than the 30-mm Avenger. However, the M4 cannon had neither the rate of fire (a comparatively modest 150 rounds per minute) nor the super-deadly depleted-uranium ordnance of the future GAU-8/A.
Though the plane was loved and used with great success by the Soviet Air Force, it was unloved by most U.S. fighter pilots—the legendary Chuck Yeager was a notable exception—among whom the Airacobra only achieved modest success.
It wouldn’t be until the latter half of the Cold War that the “plane built around the gun” concept would achieve both spectacular combat success and the love & respect of American combat aviators—thanks to the A-10–GAU-8/A tandem.
Initial History of GAU-8/A: Avenger Arises from Early Setbacks
As is true of so many well-respected military weapons, the GAU-8/A was not perfected overnight. As TWZ’s Tyler Rogoway writes, “The newborn A-10’s big tusks resulted in some serious teething problems.”
Those imperfections were not immediately apparent. The first in-flight test of the Avenger was performed on Feb. 26, 1974, and the gun was fired in flight for the first time with combat ammunition on June 19, 1974.
The gun ended up firing more than 39,000 rounds of ammunition during approximately 60 test flights, and in the process was tested in a wide variety of flight profiles: from as high as 25,000 feet to as low as 100 feet; at speeds ranging from 135 knots to 415 knots; and in all attitudes with up to five G’s.
However, as noted by the official National Museum of the U.S. Air Force Fact Sheets, “The test program went smoothly and the first test mission cancellation didn’t occur until Nov. 12, 1975, when the gun jammed. The test program identified a few problems including gun residue buildup on the canopy and problems with gun gas ingestion into the engines.
Both problems were solved and fixes were incorporated into production aircraft beginning with aircraft No. 16 (earlier aircraft were retrofitted with the fixes).”
The rest was history, as was dramatically demonstrated during the 1991 Persian Gulf War.
Avenger Effectiveness: A Firsthand Testimonial
Though this writer served as an active-duty U.S. Air Force officer during the first five years of Operation Enduring Freedom (2001-2006) and the first three years of Operation Iraqi Freedom (2003-2006), I never had the opportunity to participate in frontline combat.
However, years later, as a private military contractor, I nonetheless got a close look at the devastating effects of the Warthog’s gun.
From April 2015 to December 2018, I was a PMC on a foreign military sales contract at Balad Airbase, Iraq, providing training and mentorship to the Iraqi Air Force’s F-16 program as the country fought ISIS. While working in and around Balad’s munitions storage area,
I saw a massive graveyard of Saddam-era armored vehicles—T-55, T-62, and T-72 main battle tanks, as well as BMP armored personnel carriers—that had been laid to waste in A-10 strafing attacks.
This graveyard included row upon row of burned-out hulks, some of which were completely flipped over.
More than a decade after the air attacks that destroyed these vehicles, there were still signs posted, in both English and Arabic, warning about the radiation hazard from the depleted-uranium rounds.
Mind you, Popular Mobilization Unit troops chose to blithely ignore those warning signs when they scavenged the husks for scrap metal, but hey, that was their own problem, not mine.
About the Author: Christian D. Orr, Defense Expert
Christian D. Orr is a Senior Defense Editor. He is a former Air Force Security Forces officer, Federal law enforcement officer, and private military contractor (with assignments worked in Iraq, the United Arab Emirates, Kosovo, Japan, Germany, and the Pentagon). Chris holds a B.A. in International Relations from the University of Southern California (USC) and an M.A. in Intelligence Studies (concentration in Terrorism Studies) from American Military University (AMU). He is also the author of the newly published book “Five Decades of a Fabulous Firearm: Celebrating the 50th Anniversary of the Beretta 92 Pistol Series.”
