A needlegun, also known as a needler, flechette gun or fletcher, is a firearm that fires small, sometimes fin-stabilized, metal darts or flechettes. Theoretically, the advantages of a needlegun over conventional projectile firearms are in its compact size, high rate of fire, and extreme muzzle velocity. The needle presents less frontal area than a bullet, producing less drag and thus more effective range than a wider projectile of the same mass and velocity. There have been experiments to make guided flechettes that can home in on targets.
Pre-industrial
The first projectiles in early gun systems dating from the 14th century were typically hand wrought iron flechettes wrapped in a leathersabot. However, due to the expense and trouble of making these darts in a pre-industrial society, they were soon replaced with the less accurate stone cannonball.
s again came into mass use in the years before World War I. Starting as early as 1910, the French began experimenting with air-dropped flechettes; flechettes dropped from planes were used extensively during the war.
Vietnam War
A June 1978 issue of Gallery Magazine quotes L. Fletcher Prouty observing a test of flechette weapons in 1960 and the testimony of William E. Colby in the Church Committee on September 16 to 18, 1975 describing flechette weapons. Charles A. Senseney testified that he was a project engineer of the M-1 dart launcher that was described as resembling a M1911 pistol with a sight mount at the top. Senseney claimed the M-1 was designed for the US Army Special Forces to be used in the Vietnam war but never got there due to not being able to get into the US Army's logistics system in time. Flechette ammunition encased in a sabot was available for the M-16, shotguns, and other weapons for use in Vietnam.
Underwater
A June 1965Esquire magazine story on the making of the then-upcoming James Bond filmThunderball featured drawings of dart firing pistols that were not used in the completed film. At the same time several makes of underwater firearms fired a steel bolt just over 4 inches long.
The Special PurposeIndividual Weapon was a long-running United States Army program to develop, in part, a workable XM-216 flechette-based "rifle", though other concepts were also involved. The concepts continued to be tested under the Future Rifle Program and again in the 1980s and 1990s under the Advanced Combat Rifle program, but neither program resulted in a system useful enough to warrant replacing the current M16.
In fiction
In Marko Kloos's Frontlines series of novels, the military commonly use M66 flechette rifles and pistols putting out rounds of thousands a minute. In William Gibson's novel Neuromancer, the character Molly Millions uses a flechette pistol. In Neal Stephenson's novel Snow Crash, characters use a modified version of a needle/railgun called Reason. In Michael Moorcock's Jerry Cornelius stories, the title character uses a transistorized needlegun. In Terry Brooks's Genesis of Shannara stories, multiple characters use flechette guns. In Bungie's 1996 video game sequel, Marathon Infinity, the KKV-7 10mm SMG Flechette makes its debut and introduces the player to an extreme rate of fire. In Bungie's 2010 first person shooter, Halo Reach, there are two guns, the needler and the needler rifle. In Call of Duty Black Ops 4, a flechette rifle called the S6 Stingray can be unlocked. It is a two-round burst tactical rifle firing high damage serrated projectiles. Impact blasting projectiles can be equipped for maximum damage. In the videogame F.E.A.R., there are several 10mm flechette nailguns. In the fictional universe of Warhammer 40,000, Needleguns are occasionally mentioned as being used by non-military combatants, such as inquisitors and assassins.