Special Purpose Individual Weapon

The Special Purpose Individual Weapon (SPIW) was a long-running United States Army program to develop, in part, a workable flechette-firing "rifle", though other concepts were also involved. The concepts continued to be tested under the Future Rifle Program and again in the 1980s under the Advanced Combat Rifle program, but neither program resulted in a system useful enough to warrant replacing the M16.

Special Purpose Individual Weapon
The Special Purpose Individual Weapon at the museum of the Aberdeen Proving Ground in Aberdeen, Maryland, United States
TypeBullpup flechette rifle
Place of originUnited States
Production history
Designed1951
Specifications
Mass
  • 3.5 lb (1.6 kg) (Project SALVO)
  • 10 lb (4.5 kg)
  • 24 lb (11 kg)
  • 14 lb (6.4 kg) (Project NIBLICK)
Cartridge12 gauge flechette rounds, XM110 5.6×53mm (Project SALVO)
Rate of fire
  • 2300 rpm (Project SALVO)
  • 2400 rpm (Project NIBLICK)
Feed system60-round detachable box magazine (Project SALVO and NIBLICK)
SightsNone
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