The air on Green Beach wasn’t just hot; it was a physical weight, a suffocating mixture of sulfur, ozone, and the copper tang of fresh blood. On this godforsaken stretch of Iwo Jima, the world had ceased to be a place of geography and had become a vertical slaughterhouse of black volcanic ash. Men weren’t just dying; they were being erased by an enemy they couldn’t see, hidden in a labyrinth of stone. The Japanese defenders didn’t fire in mere bursts; they fired in curtains of lead that shredded the very air the Marines breathed.
Then, through the cacophony of exploding mortar shells and the primal screams of the wounded, a new sound tore through the atmosphere. It wasn’t the rhythmic, chugging “thump-thump-thump” of the standard American M1919 machine gun. It was a mechanical shriek—a high-pitched, terrifying buzz that sounded like the sky itself was being unzipped by a giant, angry serrated blade.
It was the sound of twelve hundred rounds per minute.
Marine Sergeant Mel Grevich felt the heat of the weapon through his gloves, a searing reminder of the unauthorized beast he held in his hands. Every time he pulled the trigger, the “Betty Anne” didn’t just fire; it snarled. Across the beach, the Japanese defenders, veterans of a dozen bloody campaigns, froze. They had never heard anything like this. This wasn’t a weapon of war; it was a monster born of desperation and midnight grease.
As Grevich watched a squad of his brothers get pinned down by a concrete pillbox that had survived seventy-four days of naval bombardment, he knew that the next few seconds would determine if his three months of secret, sleepless nights in a Hawaiian warehouse were a stroke of genius or a death sentence. He adjusted his grip on the modified M1 Garand stock he had grafted onto an aircraft gun, felt the volcanic grit grinding in his teeth, and prepared to unleash a hell the Marine Corps hadn’t authorized, but the Pacific desperately needed.
At 2200 hours on November 17th, 1944, Sergeant Mel Grevich stood in a dim, oil-slicked storage warehouse at Camp Tarowa, Hawaii. He was staring at a row of twisted, oil-streaked aircraft waiting to be scrapped—ghosts of the Pacific war. At twenty-six years old, with eighteen months of hard-fought combat in the Pacific behind him, Grevich felt the weight of a different kind of failure. He had seen zero innovations that had saved lives, despite the mounting bodies.
His battalion had lost eleven machine gunners in the past four weeks alone during training exercises. The problem was simple, brutal math: speed. The M1919 A6 light machine gun, the standard American workhorse, weighed a cumbersome thirty-two pounds and fired a measly four hundred rounds per minute. By comparison, the German MG42s were “Hitler’s Buzzsaws,” ripping through the air at 1,200 rounds per minute. Even the Japanese Type 92s managed 450.
The American Marines were being outgunned, outpaced, and outmaneuvered.
Grevich had watched three gunners die on Bougainville because they couldn’t lay down suppressive fire fast enough. The enemy simply timed the gaps in the American firing patterns and advanced through the silence. Now, assigned to G Company, 28th Marine Regiment, Fifth Marine Division, the stakes had never been higher. They were preparing for the invasion of Iwo Jima.
Intelligence reports were a nightmare. They estimated 21,000 Japanese defenders dug into eleven miles of underground tunnels. The Marines would be landing on black volcanic sand with absolutely nowhere to hide. Machine gun teams would be the difference between a foothold and a massacre, but the M1919 A6 was too slow, too heavy, and far too vulnerable.
Three weeks earlier, Grevich had approached his company commander. He didn’t just bring a complaint; he brought a breakdown of the tactical collapse. He explained:
“Sir, the M1919 A6 takes three men to operate effectively. You need one gunner, one assistant gunner to feed the ammunition, and one ammo bearer to carry the spare belts. If that gunner goes down, the entire fire team collapses like a house of cards. The weapon is a nightmare to reposition during an assault. Marines have to stop, set up the bipod, and then begin firing. By that time, the Japanese defenders have already zeroed in on the position.”
The company commander listened, the silence in the tent punctuated only by the distant sound of surf. Finally, he looked up.
“Do you have a solution, Sergeant?”
Grevich did. He had seen a spark of it work on Bougainville thirteen months earlier. In November 1943, while with the Third Parachute Battalion, he had seen Marines salvage AN/M2 aircraft machine guns from crashed SBD Dauntless dive bombers. These weapons were engineered for the sky, designed to be mounted on aircraft. They fired .30 caliber rounds at a blistering 1,200 rounds per minute—three times faster than the M1919 A6. Their barrels were lighter, designed to be cooled by the 300 mph airflow of a diving plane.
On Bougainville, a Marine named Private Bill Colby had tried a crude modification. He attached a bipod to an AN/M2 and used it as a ground weapon. It worked, but it was a clumsy beast. It still had aircraft-style spade grips, no shoulder stock, and no proper trigger. It was functional, but awkward as hell.
Grevich and his platoon leader, Lieutenant Philip Gray, had taken it a step further back then. They added an M1 Garand rifle stock, a BAR bipod, and a fabricated trigger. The weapon worked beautifully, but the Third Parachute Battalion was disbanded before they could ever prove its worth in the mud and blood of combat. Grevich was reassigned to the 28th Marines, and the modified AN/M2 was left behind, a forgotten relic.
But now, in the humid Hawaiian night of November 1944, Grevich remembered what that weapon could do. The 28th Marines would hit the beaches of Iwo Jima in less than three months. The standard M1919 A6 wouldn’t be enough to survive that volcanic hell. He needed that AN/M2 modification, but this time, he needed a fleet of them. He needed six: one for each rifle platoon in G Company, one for the demolition section, and one for himself.
His company commander approved the project. So did the battalion commander. Grevich was authorized to build the weapons, but there was a catch—a big one.
“Sergeant, you have the green light, but you’re on your own for the ‘how’.”
Grevich needed parts: AN/M2 receivers, M1 Garand stocks, BAR bipods, trigger components, and metalworking tools. Most importantly, he needed them without a single scrap of official requisition paperwork. This modification wasn’t “standard issue.” It hadn’t been blessed by Marine Corps Ordnance. If Grevich went through official channels, the project would be buried in red tape for months, maybe years. By then, they’d all be buried in the sand of Iwo Jima.
He sought out Private First Class John Little. Little wasn’t just a Marine; he was a master machinist. He understood the language of tolerances, heat-treatments, and fabrication. Grevich laid out the plan in the back of the maintenance shed.
Little looked at the sketches and nodded slowly. “I can do it, Sarge. But we’re going to have to be ghosts to get these parts.”
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Back to Grevich. The two Marines began a scavenger hunt across the base. They needed six AN/M2 receivers, which were highly controlled items—aircraft armament that was supposed to be strictly accounted for and turned in when damaged. However, the Pacific was a graveyard of aircraft. Thousands had been lost, crashed, or shot down. Parts were sitting in salvage warehouses, rotting away while waiting to be scrapped or shipped back to the mainland.
Grevich and Little started asking the right questions in the wrong places. They visited maintenance depots, salvage yards, and aircraft repair facilities. They found three AN/M2s in a parts bin labeled for scrap. They found two more inside a mangled aircraft fuselage. The sixth? They obtained it from a source Little later described as “God knows where.”
By late November, they had their six receivers. But the clock was ticking. They still needed stocks, bipods, sights, and triggers. They had less than ten weeks before the division shipped out.
Every night, after their regular duties were finished, the two Marines retreated to a makeshift shop. Under the flickering yellow light of a single bulb, they worked. Every footstep outside the door made them wonder if they’d be caught with unauthorized government property before they ever got a chance to prove the “Stinger” worked.
The first real modification began on November 21st. The AN/M2 aircraft machine gun weighed twenty-three pounds with its spade grips. The receiver was designed to be bolted into an aircraft mount, meaning there was no provision for a shoulder stock or a conventional trigger mechanism. In an aircraft turret, you fired it by pressing two butterfly triggers on the spade grips. It was perfect for a tail gunner, but nearly useless for a Marine sprinting across open ground.
Little started by removing the spade grips, unbolting them from the rear of the receiver. This left the weapon with no way to be aimed or controlled. The next step was the most delicate: fabricating a mechanical trigger assembly. The original AN/M2 used an electrical solenoid to fire—the pilot or gunner sent an electrical pulse to the weapon. Little needed to create a mechanical trigger that would physically activate that same firing circuit.
Using sheet metal, Little fashioned a trigger, bending it to the precise angle and drilling mounting holes with surgical accuracy. He attached a simple trigger guard made from scrap steel. It was crude, but it clicked with a satisfying, lethal snap.
The stock was a different beast entirely. The M1 Garand rifle stock was designed for the Garand receiver. The AN/M2 receiver was a completely different shape, featuring a buffer tube at the rear that housed the recoil spring. This tube protruded several inches. Little took a spare Garand stock and began a process of “combat surgery.”
He removed the forward section and hollowed out the rear portion to accept the buffer tube. The work required extreme precision.
“If this fits too loose, Sarge, the recoil will make it jump like a live wire,” Little muttered, filing away a microscopic layer of wood. “Too tight, and the first burst will crack the wood right down the middle.”
Little spent six hours on that first stock, using only hand tools—files, chisels, and sandpaper. When he finished, the stock slid over the buffer tube with minimal clearance. He drilled holes for mounting bolts and secured it. For the first time, the weapon had a shoulder rest.
Next came the BAR bipods. These were easier to find but required a custom adapter plate. Little fabricated them from quarter-inch steel, welding them in place so the weapon could be fired from a prone position.
The rear sight presented a final engineering hurdle. The AN/M2 had rudimentary sights designed for the vast distances of aerial combat. They were useless for ground fighting. Little considered BAR sights, but the windage knob was on the wrong side. He eventually found M2 heavy barrel machine gun sights in the inventory, which had the left-side adjustment he needed. He modified the mount and screwed it onto the top plate.
The final touch was the ammunition feed system. Marines couldn’t carry loose, flapping belts in a jungle or on a beach. Little fabricated a 100-round ammunition box from sheet metal and attached it to the left side of the receiver. Now, a single Marine could carry and operate the weapon without needing an assistant.
By December 5th, the first weapon was complete. Grevich and Little took it to a remote, windswepless section of the base firing range. Grevich shouldered the weapon, aimed at a target fifty yards downrange, and pulled the trigger.
The sound was a revelation. It was sharper, faster, and more aggressive than the M1919. At 1,200 rounds per minute, the recoil was surprisingly manageable thanks to the Garand stock. The bipod kept it rock steady. Grevich fired three ten-round bursts. All thirty rounds impacted within an eighteen-inch group.
But then, the flaw appeared. After only thirty rounds, the barrel began to smoke. After fifty, it was too hot to touch. After seventy-five, the weapon seized. The barrel had expanded from the sheer friction and heat. The AN/M2 was designed for the freezing air of high altitudes, not the stagnant heat of a Hawaiian range.
Grevich and Little stared at the smoking metal.
“We can’t add water cooling,” Grevich said. “It’ll weigh too much.”
“And we can’t change the barrel diameter without a full machine shop,” Little added.
The only solution was tactical, not mechanical. Marines would have to use the weapon in short, disciplined bursts—five to ten rounds maximum—to allow the barrel to cool. It wasn’t ideal, but it was a hell of a lot better than what they had.
By January 5th, all six weapons were finished. Each weighed twenty-five pounds—seven pounds lighter than the M1919 A6—and fired three times faster. Grevich painted them olive drab and named his weapon “Betty Anne.” The names were stenciled in white paint on the receivers.
On January 7th, 1945, the Fifth Marine Division boarded transport ships. The six “Stingers” were packed in equipment crates with no official paperwork. No Marine Corps armorer had inspected them. No officer had officially signed off. Grevich carried a standard maintenance manual in his pack, hoping it would be enough of a cover if someone asked questions. As the convoy sailed toward the Japanese home islands, Grevich sat on the deck, wondering if his unauthorized creations would save his men or fail them when the world turned to fire.
The convoy made a stop at Eniwetok Atoll on February 5th. During equipment checks, Grevich inspected all six Stingers, test-firing them at a makeshift range on the island. They were reliable, provided the gunners followed the “short burst” rule.
On February 13th, during a practice landing on Tinian, the Stingers met their first enemy: the Pacific environment. Saltwater spray corroded the sheet metal boxes, and fine sand jammed the feed mechanisms. Grevich and Little spent two frantic days cleaning and waterproofing the gear, wrapping the weapons in canvas tarps for the actual assault.
By February 16th, Iwo Jima loomed on the horizon—eight square miles of volcanic rock dominated by the grim peak of Mount Suribachi. Despite seventy-four days of bombing, the Japanese defenses were intact. The 28th Marines were assigned to Green Beach, directly below the mountain. Their mission: cut the island in half and take the peak.
Grevich assembled his gunners on February 18th.
“Listen up,” he told them, his voice low over the sound of the ship’s engines. “Short bursts only. Five to ten rounds. If you see smoke, you stop. If the barrel warps, you’re carrying a twenty-five-pound club. One hundred rounds in the box, and your ammo bearers have the rest. Fire, pause, fire, pause.”
He distributed the weapons. Three went to the rifle platoons of G Company. One to the demolition section. Grevich kept Betty Anne.
But there was a sixth gun. Grevich needed someone he could trust—someone who wouldn’t just fire it, but understand it. The battalion commander suggested Corporal Tony Stein. Stein was a toolmaker from Dayton, Ohio. He was a machinist who had worked at Patterson Field before enlisting. He was the perfect fit.
When Stein met Grevich, he didn’t just look at the gun; he interrogated it.
“How much clearance in the buffer tube?” Stein asked.
“What grade of steel did you use for the trigger guard?”
Grevich answered every technical question. Stein nodded, satisfied. On February 19th, at 0400 hours, the Marines began loading into the landing craft. The naval bombardment was a wall of sound—16-inch shells from battleships and 8-inch shells from cruisers turned the island into a cloud of dust.
Grevich stood in his craft with forty-two Marines. Betty Anne was wrapped in canvas. He carried forty-seven pounds of gear. A standard machine gunner would be carrying fifty-six pounds and require a partner just to move. Grevich was a one-man army, carrying a weapon the Marine Corps didn’t even know existed.
At 0900, the first wave hit the beach. Grevich watched from 800 yards out. It was eerily quiet. No enemy fire. He wondered if the bombardment had actually worked.
Fifteen minutes later, he realized how deadly that silence was.
At 0915, Grevich’s ramp dropped. He hit waist-deep water, the volcanic ash sucking at his boots. He pushed forward, ten yards, twenty yards.
The first mortar round hit at 0916. Then the beach erupted.
The Japanese had waited for the Marines to bunch up on the sand before opening up from reinforced concrete pillboxes. It was a kill zone. Grevich dropped behind a small rise, unwrapped Betty Anne, and deployed the bipod.
Twenty feet to his right, a standard M1919 A6 team was being torn apart. The assistant gunner went down in a burst of fire. The primary gunner tried to reposition the heavy weapon alone and was hit in the chest seconds later. The fire team was gone in eight seconds.
Grevich identified a pillbox seventy yards inland. He shouldered Betty Anne, aimed at the narrow firing port, and squeezed.
The sound of the Stinger cut through the roar of the beach. In one second, ten rounds—every fifth a tracer—vanished into the pillbox. The Japanese gun stopped instantly. Grevich waited five seconds for the barrel to breathe, then shifted to a second target.
“That’s it, Betty Anne,” he whispered.
The difference was staggering. The higher rate of fire created a psychological wall. The Japanese couldn’t return fire when twelve hundred rounds per minute were hammering their positions. Across Green Beach, the other five Stingers were singing their high-pitched song. By 0930, the 28th Marines had created enough of a gap to push inland.
But the cost was high. Grevich’s 100-round box was empty in fifteen minutes. He reloaded, feeling the heat radiating off the barrel.
At 0945, a runner reached him. “Stein’s on the right flank, Sarge! He’s gone crazy! He’s made three trips back to the beach for ammo, and every time he brings a wounded man back on his shoulders! He’s running without his helmet or boots just to go faster!”
Grevich nodded, but he was worried. The island was literally steaming from volcanic activity. The ambient heat, combined with the combat fire, was pushing the thin aircraft barrels to the breaking point.
By 1100, all six Stingers were in constant use. They had proven the concept: one Marine could do the work of three. But by 1130, the first platoon’s weapon suffered a barrel split. The thin metal just couldn’t take it. The rate of fire dropped as the gunner switched to a standard M1919.
At 1200, the second platoon used their Stinger to cover a demolition team. The gunner suppressed four positions in rapid succession, allowing the engineers to blow a bunker. But by 1230, the third platoon’s weapon overheated so badly the barrel warped. The rounds began “keyholing”—tumbling through the air instead of spinning. The gun jammed permanently, and the gunner had to scavenge a rifle from a fallen Marine.
Only three Stingers remained: Grevich’s, the second platoon’s, and Tony Stein’s.
By 1300, the ammunition supply was a nightmare. The beach was a gauntlet of mortar fire. Ammunition bearers couldn’t get through. Grevich was down to his last seventy-five rounds. He reduced his bursts to three rounds each.
At 1045 the next morning, the second platoon’s trigger assembly snapped. The homemade sheet metal finally gave way under the stress.
Now, it was just Grevich and Stein.
Grevich was on the eastern slope of Suribachi; Stein was on the western. They were isolated, running on borrowed time and scavenged belts. Grevich found a wounded Marine with belts for a standard M1919. They were compatible. He loaded them, but he knew Betty Anne was dying. The barrel was visibly warped.
By 1700 hours on February 20th, the 28th Marines held positions halfway up the mountain. They had lost 430 men in two days.
Betty Anne fired her last rounds on February 21st at 0815. Grevich was suppressing a nest on the northern slope. He fired thirty rounds, silenced the position, and then… nothing. The firing solenoid had finally vibrated itself to death.
Grevich set the weapon down gently in the black sand. He picked up an M1 Garand. His three months of work had lasted seventy-two hours in combat.
But those seventy-two hours had changed the momentum of the battle.
Tony Stein’s weapon lasted until February 24th, the day after the flag was raised on Suribachi. His gun literally split apart during a firefight. He switched to a standard M1919 for the rest of the battle.
By February 26th, all six Stingers were gone. They were never officially registered. They had no serial numbers. They disappeared into the volcanic sand or were tossed into salvage piles.
Tony Stein didn’t survive the island. On March 1st, he volunteered to lead a patrol to destroy a machine gun complex. He was hit by a sniper and died instantly at twenty-three years old.
In 1946, Stein was posthumously awarded the Medal of Honor. The citation mentioned his “personally improvised aircraft-type weapon.” It didn’t mention Mel Grevich. It didn’t mention John Little. It didn’t mention the weeks of secret work in a Hawaiian warehouse.
History remembered the hero who held the gun, but forgot the men who built it.
Mel Grevich returned to Minnesota and lived a quiet life, never seeking the spotlight. John Little became a homebuilder in California. He only confirmed his role in his later years. The Marine Corps never officially adopted the Stinger; they preferred the heavy, slow reliability of the M1919. But the lessons of the Stinger—the need for a lightweight, high-rate-of-fire, one-man machine gun—eventually led to the development of the M60.
Today, no original Stinger exists. Only stories and one modern replica remain. They were weapons that existed for three months, fought for three days, and then vanished.
