A History of the Handgun

Gunpowder is twelve hundred years old, but the story that actually matters for the weapon a police officer wears today begins in 1836, when a young man named Samuel Colt made the repeating handgun cheap enough to change the world. What follows that patent is a two-century argument about one deceptively simple question: how do you reliably stop a determined man with a gun small enough to hold in one hand? The answer kept changing, and once, in Miami, it was decided in under five minutes.

Twelve hundred years in four steps

Around the ninth century, Chinese alchemists chasing an elixir of life combined saltpeter, sulfur, and charcoal and produced its opposite. By 1044 the recipe was in a military manual; within two centuries it was propelling projectiles down the first metal tubes, the hand cannons, the oldest datable example being Chinese from about 1288. Gunpowder was Chinese for roughly four hundred years before European firearms grew formidable.

A hand cannon kicks and won't aim, so the first real guns were long, braced against the shoulder: the matchlock arquebus of the early 1400s, whose trigger-dropped smoldering cord let a shooter keep both hands and both eyes on the target.

Lock, stock, and barrel: the entirety of a thing. the firing lock, the wooden stock, and the barrel — the three parts that make up the whole gun.

The pistol had to wait for an ignition that needed no babysitting. The wheellock of the early 1500s, a spring-wound wheel throwing sparks off iron pyrite, could be carried loaded and fired instantly with one hand, and that is the exact capability a pistol requires. So the long gun leads the practical pistol by roughly a century.

Then came the simpler flintlock of the 1600s, flint striking steel — the standard for the next two centuries.

A flash in the pan: a bright start that fizzles to nothing. the priming powder flares in the pan but fails to set off the main charge.

Finally, around the 1820s, the percussion cap, a tiny copper cap of shock-sensitive compound, made compact handguns reliable in weather at last. With dependable ignition solved, one question remained: how to fire more than once?

Hang fire: to stall or hesitate. a dangerous pause between the trigger and the discharge.

Colt didn't invent the revolver. He made it inevitable.

The idea of a rotating cylinder of chambers, each stepping behind a single barrel, was old. Elisha Collier patented a flintlock revolver in 1818, and crude revolving matchlocks date to the 1500s. What nobody had done was make the thing cheap, reliable, and identical a thousand times over. That was the work of a Connecticut showman-inventor who, as legend has it, whittled the concept from a wooden model while working a ship's wheel at sea.

Samuel Colt's U.S. patent of February 25, 1836 produced the Colt Paterson, the first practical revolver: five shots, a folding trigger, a percussion cap on each chamber. Colt's genius was less the gun than the factory. He built it from interchangeable parts on machines, the emerging “American System” of manufacture, so that any part fit any gun and any worker could be trained to a station. It was arms-making as mass production, decades before Ford.

On the frontier the Paterson was a revelation. Its trigger folded up into the frame until the hammer was thumbed back, when it dropped down ready to fire; the earliest models wore no trigger guard at all. What mattered was the arithmetic of a fight: a soldier with a single-shot horse pistol had one shot before the gun became a club, while a rider carrying a pair of five-shot Patersons had ten. Against mounted Comanche bowmen, who could loose arrows faster than a man could reload a musket, that was the difference between prey and predator.

It also went broke. The Paterson was fragile and expensive, the Army wasn't buying, and Colt's company failed in 1842. What saved him was a war and a Texas Ranger. In 1846, Captain Samuel Walker, who had used Patersons fighting Comanches and knew what a repeater was worth against mounted attackers, sought Colt out and helped him design a monster: the Colt Walker of 1847, a nine-inch, four-and-a-half-pound, six-shot .44 so powerful it remained the hardest-hitting handgun made until the .357 Magnum arrived eighty-eight years later. A U.S. government order for a thousand of them resurrected Colt, and this time he stayed rescued.

The revolvers that followed armed the frontier and the Civil War: the lighter Dragoons, the elegant 1851 Navy in .36, the 1860 Army in .44 that was the Union's iconic sidearm.

All of them shared one tedious flaw. They were cap-and-ball: to reload, a shooter poured loose powder into each chamber, rammed a lead ball on top, and pressed a percussion cap onto each nipple, six times over. A revolver gave you six fast shots and then a slow, fiddly, weather-sensitive minute of reloading. The next revolution was not about firing. It was about loading.

Keep your powder dry: stay ready. damp black powder will not fire.

The metallic cartridge: the real revolution

The fix was to package primer, powder, and bullet inside a single brass case: the self-contained metallic cartridge. Drop it into the back of a chamber, fire, extract the empty, repeat. It made loading fast, clean, and reliable in the rain, and it is essentially the ammunition we still use today. But putting cartridges into a revolver required a cylinder bored all the way through so rounds could load from the rear, and one man owned that idea.

Rollin White patented the bored-through cylinder in 1855. He had worked for Colt and offered it to the boss first; Sam Colt waved it off as a novelty. Smith & Wesson did not. They licensed White's patent exclusively, paid him a royalty of twenty-five cents a gun, and in 1857 released the S&W Model 1, the first commercially successful cartridge revolver. For more than a decade that patent was a wall: it locked Colt and everyone else out of the cartridge-revolver business in America. Only when White's patent lapsed, around 1869–1870, could Colt answer.

Answer it did, with the most famous handgun ever made. The Colt Single Action Army of 1873, the “Peacemaker,” chambered in the potent .45 Colt, became the U.S. cavalry sidearm and the revolver of a thousand Westerns. It is a single-action: the shooter thumbs the hammer back for each shot. That is the gun the phrase “God made men, Colt made them equal” was minted for.

Going off half-cocked: acting rashly, before you're ready. the hammer's half-cock notch was meant as a safety — let it slip and the gun fired too soon.

Toward the modern revolver: double-action and the swing-out cylinder

Two refinements produced the revolver a twentieth-century cop would recognize. The first was the double-action mechanism, where a single long trigger pull both rotates the cylinder and drops the hammer, so the gun can be fired as fast as the trigger can be pulled, without thumb-cocking. The second was the swing-out cylinder: Colt's Model 1889 and Smith & Wesson's “Hand Ejector” of the 1890s hinged the whole cylinder out to the side, so a single push of the ejector rod dumped all six empties at once and the gun could be reloaded in seconds.

The cartridge that rode this design into history arrived in 1899: Smith & Wesson's .38 Military & Police revolver, soon chambered for the .38 Special. Six shots, utterly reliable, easy to train, mild to shoot. Under the later name Model 10 it would sit on American police hips for the better part of a century. In 1935 came its magnum sibling, the .357 Magnum, a lengthened, far more powerful .38 that was, briefly, the most powerful handgun cartridge in the world. Those two cartridges are what the FBI would carry onto a Miami street in 1986.

The semi-automatic: let the shot do the work

The revolver made you cycle the gun. The next leap made the gun cycle itself. In a semi-automatic pistol, the fired cartridge's own energy ejects the empty case, cocks the mechanism, and strips a fresh round from a spring-fed magazine in the grip. One trigger pull per shot, no manual cycling, and a reload is a fresh magazine slapped home rather than cartridges thumbed in one at a time.

Despite a persistent belief, the Colt 1911 was not the first semi-automatic pistol. The first successful self-loaders were European and beat it by fifteen to twenty years: Hugo Borchardt's C93 (1893) with its distinctive toggle-lock, the Mauser C96 “Broomhandle” (1896), and Georg Luger's elegant P08 (1900). John Browning was building self-loaders in the 1890s. What made the 1911 matter was not that it was first but that it was right, and the reason it exists at all is a bloody lesson learned in the jungle.

Brilliant as they were, these first self-loaders stayed niche. They were expensive and intricate, their toggle and broomhandle layouts felt alien in the hand, and most fired small, fast bullets that horrified an Army fresh from the Philippines. What the market wanted was a self-loader as simple and hard-hitting as a revolver — and it would take Browning, and a lesson written in blood in the jungle, to build it.

Point-blank: blunt and direct; at very close range. close enough to aim dead level, with no arc to allow for.

Browning delivered. The M1911 perfected the short-recoil, tilting-barrel locked breech: on firing, barrel and slide recoil together, locked; after a few millimeters the barrel tilts down and unlocks; the slide runs back, flinging out the empty and cocking the hammer; a spring then drives it home over a fresh round. That mechanism is still inside almost every centerfire pistol built today. A Glock, a SIG, a modern Smith are all, mechanically, the 1911's grandchildren. The Army adopted it on March 29, 1911, it fought through two world wars and Korea and Vietnam, and it served as the standard U.S. sidearm until 1985, seventy-four years, when the 9mm Beretta M9 replaced it.

What actually replaced the 1911: the Beretta M9

When the seventy-four-year reign ended in 1985, the pistol that won the contract was not American and not a .45. After a long, contentious trial, the U.S. military adopted the Beretta 92F as the M9: a 9mm, double-action/single-action, all-steel service pistol holding fifteen rounds to the 1911's seven. The switch was as much about NATO as ballistics — the alliance had standardized on 9mm, and doubling a soldier's onboard ammunition mattered. The M9 would carry U.S. troops through the Gulf, the Balkans, Iraq, and Afghanistan, serving as the standard sidearm until the striker-fired SIG M17/M18 replaced it in 2017.

The quiet revolution: polymer and the striker

For seventy years the semi-auto meant steel and, usually, a hammer. Then in 1982 an Austrian engineer who had never built a gun won a military contract with one. Gaston Glock's pistol, the Glock 17, had a frame of injection-molded polymer, almost no external controls, a striker instead of a hammer (a spring-loaded firing pin, cocked by the slide and released by the trigger), and a seventeen-round magazine. It had roughly half the parts of a 1911, was cheaper to make, nearly impossible to wear out, and forgiving of neglect. Police administrators noticed the price and the capacity; officers noticed that it simply worked. Within twenty years the polymer, striker-fired pistol was the default sidearm of American law enforcement, and it remains so. Almost every duty pistol today is a variation on Glock's template.

April 11, 1986: four minutes in Miami

For most of the twentieth century the American police officer carried a .38 Special revolver. Six shots, simple, dependable, the badge's gun for generations. What ended its reign was not a study or a trend. It was a single firefight on a suburban Miami street that lasted under five minutes and has been dissected, round by round, ever since.

The FBI was hunting two men, Michael Lee Platt and William Russell Matix, behind a string of armored-car and bank robberies. Both were former Army, physically hard, calm under fire, and neither had a criminal record before the spree. On the morning of April 11, 1986, a rolling stakeout of eight agents in five unmarked cars spotted the suspects' stolen vehicle in the Pinecrest area and forced it off the road.

The armament was badly mismatched, and not in the FBI's favor. The agents carried mostly .38 and .357 revolvers, three S&W Model 459 9mm pistols, and two shotguns. Platt came out with a Ruger Mini-14, a .223 semi-automatic rifle. A rifle round travels two to three times the speed of a pistol round and carries far more energy, and Platt, wounded early and repeatedly, kept working that rifle. In roughly 145 rounds exchanged over those few minutes, most of the damage to the agents came from one man with one rifle.

Early in the fight, Special Agent Jerry Dove, with his 9mm, put a round into Platt that should have ended it. It passed through Platt's right upper arm and into his chest, and stopped roughly one inch short of his heart. The autopsy later found the wound had collapsed a lung and filled his chest with more than a liter of blood. It was, in the medical language, non-survivable. It was also, in the only sense that mattered on that street, not enough. Platt did not go down. He kept fighting for several more minutes, and in those minutes he killed the very agent who had shot him.

The bullet that killed Platt and the bullet that failed to stop him were the same bullet. That paradox is the whole story of the next thirty years of American ammunition.

When it was over, two agents were dead: Benjamin Grogan and Jerry Dove. Five more were wounded, several gravely. It was one of the most badly injured groups of agents in the Bureau's history. The end came from a man who could barely stand. Special Agent Edmundo Mireles Jr., his left forearm shattered by a rifle round, worked a shotgun one-handed and then, as Platt and Matix tried to escape in an agent's own car, walked up and emptied his .357 revolver into them at close range. His last shots killed both men.

The reckoning: from “stopping power” to a penetration standard

The Bureau's after-action study was unsparing, and it fixed on Dove's round. If a good hit from a service pistol could leave a mortally wounded man fighting for minutes, then the gun and the cartridge were not doing their job. The finding was blunt: their sidearms lacked stopping power, and their revolvers had lost on capacity and reload speed to a man with a magazine-fed rifle.

What the FBI did next mattered more than the gunfight itself, because they refused to argue about it by anecdote. They built a laboratory discipline. Working with wound-ballistics researchers, the Bureau established a ballistic testing protocol: fire candidate rounds into calibrated ten-percent gelatin, through barriers like heavy clothing, glass, and sheet metal, and measure how deep the bullet drives and how reliably it expands. The now-famous benchmark that emerged was penetration of roughly 12 to 18 inches, deep enough to reach vital organs from any angle, not so deep it passes through and endangers bystanders. Dove's round had expanded well but stopped short; the lesson the FBI drew was that penetration, reaching the vitals, was the property that had been missing.

That pointed them at a bigger, harder-hitting cartridge, the 10mm Auto, and this is where the popular story goes slightly wrong.

The FBI “Lite” load: the figures above are the 10mm at full power. The FBI's specified duty load ran the same 180-grain bullet at only about 1,000 fps — roughly 400 ft·lbf, the number the .40 S&W would later match in a shorter case. the full-power round is the cartridge's identity; the downloaded “Lite” load is what actually rode in the Model 1076.

That opened the door for one of the neater pieces of engineering in cartridge history. Smith & Wesson looked at the FBI's downloaded 10mm and realized the reduced charge left empty air in the long case. Squeeze that air out, shorten the case, and you get the same 180-grain-at-1,000-fps performance in a cartridge short enough to fit an ordinary 9mm-sized frame. Teamed with Winchester, they released it on January 17, 1990 as the .40 S&W. Glock, moving fast, had its Glock 22 and 23 in .40 on dealers' shelves before Smith's own pistol shipped.

The .40 S&W did to American policing what few cartridges ever have: it took over almost completely. It offered most of the 10mm's effectiveness with tolerable recoil, in a high-capacity pistol the size of a 9mm. Through the 1990s and 2000s, department after department turned in the six-shot .38 revolver for a polymer semi-auto holding fifteen or more rounds of .40. Capacity roughly doubled overnight; reloads dropped from a slow fumble to a one-second magazine change. A good number of agencies and officers went instead to Browning's old .45 ACP, enjoying a second life in high-capacity form. Either way, the age of the revolver on an American duty belt was over, and it had ended, more than anything, because of four minutes in Miami.

~2015: the FBI goes back to the 9mm

Here is the twist that makes the whole arc rhyme. In 2014 the FBI published a justification to return to the very cartridge it had condemned after Miami: the 9mm. The reasoning, laid out in a now widely circulated white paper, was not sentiment but data, and it quietly overturned the entire “bigger is better” logic that Miami had installed.

Three findings did the work. First, modern bullets erased the caliber gap. A generation of bonded, controlled-expansion hollow points had advanced so far that, in the FBI's own gelatin protocol, premium 9mm loads now matched or beat premium .40 and .45 loads, with “little to no noticeable difference in the wound tracks” across the three. The property Miami had exposed, reliable penetration and expansion, was now a solved problem in every service caliber. Second, shot placement dominates everything, and placement favors the 9mm: agents shot faster and more accurately with 9mm than with .40 in identically sized pistols, which matters enormously given that officers in real gunfights miss the majority of their shots. Third, the 9mm simply gives you more: more rounds in the magazine, less recoil, cheaper ammunition, less wear on the guns, and higher reliability.

Read down the energy column and the FBI's argument almost makes itself. On paper the 9mm sits near the bottom, a hair above the old .38 — and for eighty years that number was the whole case against it. The Bureau's finding was that the number had stopped mattering: fired as a modern bonded hollow-point, the 9mm penetrated and expanded to the same 12-to-18-inch standard as the .40 and the .45, wound tracks all but indistinguishable. Once the bullets equalized, the numbers above stopped deciding fights — and everything the 9mm still won on (recoil, capacity, hits, cost) tipped the other way. (Figures are representative FMJ loads; premium defensive loads vary. Muzzle energy = bullet mass × velocity² ÷ 450,437.)

By 2015 the Bureau was transitioning back to 9mm, and much of American law enforcement followed once again. The .40 S&W, king for two decades, went into decline almost as fast as it had risen. Put plainly: better bullets, not bigger ones, won the argument, and the caliber the FBI abandoned in the blood of a Miami street came back thirty years later, vindicated.

Miami had a before and an after

Miami was the fight that changed the police cartridge, but it was the middle child of three watershed gunfights, each of which forced American law enforcement to re-arm in a different way. Together they trace the whole modern journey from the six-shot revolver to the rifle in the trunk.

Before · Newhall, 1970: the reload that came too late

On April 6, 1970, four young California Highway Patrol officers — Walt Frago, Roger Gore, James Pence, and George Alleyn — were killed in a roadside gun battle with two armed men that lasted about four and a half minutes. It was the deadliest day in CHP history to that point, and the post-mortem was brutal for what it revealed about the revolver: officers had to reload under fire the slow way, thumbing loose cartridges into a swung-out cylinder while being shot at. One enduring legend holds that a dead officer was found with his spent brass in his pocket, having tidily emptied his cylinder into his hand the way he'd been drilled on the range; that detail is probably apocryphal, but the lesson beneath it was real and it stuck. Newhall rewrote police training nationwide: the “survival mindset,” shooting from cover, moving targets on the range, felony-stop tactics, and above all the speedloader in place of the old loose-round “dump pouch,” so a revolver could be recharged in seconds rather than a fatal fumble. Newhall didn't change the gun. It changed how officers were taught to survive with it.

The middle · Miami, 1986

Sixteen years later, Miami exposed the limit that training alone couldn't fix. The problem there wasn't how fast the revolver reloaded but what the bullet did when it arrived, and how badly six rounds were outmatched by a rifle and a magazine. Miami is why the cartridge and the cylinder both had to go, and why the polymer, high-capacity semi-auto took the belt. (The full account is above.)

After · North Hollywood, 1997: the day the pistols couldn't reach

On February 28, 1997, two men walked out of a Bank of America in North Hollywood in full body armor, carrying automatic rifles, and turned a Los Angeles street into a forty-four-minute battle. Larry Phillips and Emil Mătăsăreanu wore Type IIIA vests layered with trauma plates and fired rifles — including AK-pattern Norinco Type 56s converted to full automatic — that punched through the LAPD's cars and defeated the officers' vests. The police had pistols and shotguns, and for most of the fight they were simply outgunned; their rounds bounced off the armor. In one of the most remarkable episodes in American policing, officers drove to a nearby gun store, B&B Sales, and borrowed AR-15 rifles off the rack for ammunition that could reach the two men. Nearly two thousand rounds were fired. Both robbers died; a dozen officers and eight civilians were wounded, and, astonishingly, no one else was killed.

The lesson was as blunt as Miami's, one tier up: a patrol officer with a handgun could be hopelessly outmatched by a determined man with a rifle and armor. Within months the Pentagon handed the LAPD hundreds of surplus M16s, and departments across the country began stowing AR-15 patrol rifles in the trunks of ordinary cruisers, not just in SWAT vans. The rifle, gone from the police car for the better part of a century, came back to stay.

Three fights, three re-armings: Newhall put a speedloader, and then a mindset, on the belt; Miami put a high-capacity semi-auto on it; North Hollywood put a rifle back in the car. Each began the same way — with officers discovering, in real time and at terrible cost, that what they carried was not enough.

Where two centuries landed

Stand behind a modern police officer and look at the holster, and you can read this whole book in one object. The gun is almost certainly a striker-fired polymer 9mm — a Glock 17 or 19, a SIG Sauer P320, or a Smith & Wesson M&P — holding fifteen to seventeen rounds, weighing less than a loaded 1911, with no manual safety to forget. It is, mechanically, still Browning's tilting barrel wrapped in Gaston Glock's plastic, feeding the cartridge Georg Luger necked down in 1902. Every ancestor in these pages is present in it.

The military made the same journey. In 2017 the Army retired the Beretta M9 and adopted the SIG P320 as the M17 and M18 — striker-fired, polymer, 9mm, and from the factory cut for a red-dot optic. That last detail is the newest chapter still being written: the miniature reflex sight, once exotic, is now standard issue on duty slides, because a glowing dot puts hits on target faster than iron sights under stress — the same problem, shot placement, that Miami exposed forty years ago, solved one more time.

And the caliber, after two centuries of argument from the .36 Paterson to the .45 to the mighty .44 Magnum, has settled almost exactly where it began for the modern era: a 9mm, roughly the size of Luger's original, chosen not because it hits hardest but because an officer can carry more of it, shoot it faster, and place it better — and because the bullet inside it is now so good that the old power argument simply stopped mattering. Better bullets, more hits, less noise. That is where the handgun's long, bloody, ingenious argument with itself has, for now, come to rest.