5.6mm Flechette
1962 · AAI Corporation · 4 firearms in catalog
Also known as: XM110, XM144, XM645, 5.6mm SPIW flechette
Cartridge specifications
| Bullet Diameter | 1.8 mm (0.071") |
| Typical Bullet Weight | 0.66 g (10 gr) |
| Typical Muzzle Velocity | 1402 m/s (4600 fps) |
| Typical Muzzle Energy | 648 J (478 ft·lbf) |
| Primer Type | Centerfire |
| Cartridge Type | Flechette |
| Introduced | 1962 |
Firearms chambered in 5.6mm Flechette
- AAI SPIW — AAI Corporation (Textron Systems) · Assault Rifle · 1964
- Springfield SPIW — Springfield Armory · Assault Rifle · 1963
- Winchester SPIW — Winchester Repeating Arms Company · Assault Rifle · 1964
- XM19 SPIW — AAI Corporation (Textron Systems) · Assault Rifle · 1964