"... subduing him. Two patrons then pinned the gunman down until police could arrive, according to the club’s owners, who viewed security video."
From "Here are the latest developments in the Colorado Springs nightclub shooting" (NYT).
It's hard to picture grabbing a handgun from a man who is in the middle of using it. But then to use the gun to hit the erstwhile gunman.... I guess your hand is not in the position to fire the gun. It's reversed and pointing more or less at you. And isn't the gunman's hand grabbing to get back to the trigger and shoot you? Once you've gone that far, perhaps the only thing you can do is to grip the barrel and clobber the guy with the grip.
Is that what happened?
Whatever happened, kudos to the man who disarmed the murderer.
CORRECTION: Oh, no. The difficult tangle I tried to picture is wrong. The murderer was using a rifle and carrying a handgun. That made the handgun easier to grab and to grab by the grip. If you got that far, would you use the handgun to hit the murderer?
IN THE COMMENTS: Enigma reminds me that there is a standard term for hitting someone with a gun: "pistol-whipping." Actually, there are 2 terms — "pistol-whipping" and "buffaloing," as I learned from the Wikipedia article, "Pistol-whipping":
Pistol-whipping or buffaloing is the act of using a handgun as a blunt weapon, wielding it as an improvised club....
The term "buffaloing" is documented as being used in the Wild West originally to refer to the act of being intimidated or cheated by bluffing. It would develop into a term meaning to strike someone with a handgun in the 1870s when Stuart N. Lake reported Wyatt Earp doing so.... The new use of the term developed because the act of hitting someone with their revolver was seen as an additional insult to the character of the victim....
The practice of using the handgun itself as a blunt-force weapon began with the appearance of muzzle loaders in the 15th century. Single-shot weapons that were tedious to reload were used to strike opponents directly in close-quarters combat after their projectile had been expended. It was entirely up to circumstance whether the user had time or chose to reverse the gun in their hand and strike a blow with its handle or merely swung the heavy weapon as a club or baton holding it normally....
Author Paul Wellman notes that clubbing an opponent with the butt of a gun held by its barrel, as seen in some Westerns, is problematic. First, the danger of an unintentional discharge could fatally wound the wielder. Second, many early revolvers of the black-powder cap and ball era, were relatively fragile around their cylinders relative to solid single-shot weapons. Third, rotating a gun so that it can be held by its barrel takes extra time, potentially crucial in a conflict.
To avoid the risk of damage or potential delay, pistol-whipping may be done with the gun held in an ordinary manner, hitting the target with an overhand strike from either the barrel or the flank of the gun above the trigger. It was a fairly common way to incapacitate a man in Western frontier days....
The practice was seen as a means of avoiding fatal confrontations. Instead of opening fire, an officer could knock someone unconscious with the barrel of their revolver which they claimed lowered mortality rates. This technique would later be considered a form of police brutality....
AND: The NYT has more detail on the man who took down the killer: "An Army Veteran Says He Went Into ‘Combat Mode’ to Disarm the Gunman/Richard M. Fierro, who served for 15 years in the military, said he was at Club Q in Colorado Springs with his family, and took down the man who killed five people."
Fiero was at the bar with his wife and daughter to see a drag show. When the shooting began, he got down on the floor, but when "he saw the gunman move through the bar toward a door leading to a patio where dozens of bar patrons had fled... he raced across the room, grabbed the gunman by a handle on the back of his body armor, pulled him to the floor and jumped on top of him."
The gunman, who Mr. Fierro estimated weighed more than 300 pounds, sprawled onto the floor, his military-style rifle landing just out of reach. Mr. Fierro started to go for the rifle, but then saw that the gunman had a pistol as well.
“I grabbed the gun out of his hand and just started hitting him in the head, over and over,” Mr. Fierro said.... [H]e yelled for other club patrons to help him. A man grabbed the rifle and moved it away to safety. A drag dancer stomped on the gunman with her high heels....