|Type||Cadet training rifle|
|Place of origin||United Kingdom|
|Used by||United Kingdom & Australia|
|Manufacturer||BSA and W.W. Greener|
|Number built||approx. 83,000-|
|Weight||6 lb 5 oz (unloaded)|
|Action||Martini Falling Block/Francotte action|
|Rate of fire||10 rounds/minute|
|Muzzle velocity||1,200 ft/s (370 m/s)|
|Effective firing range||300 yd (270 m)|
|Feed system||Single shot|
|Sights||Sliding ramp rear sights, Fixed-post front sights|
The Martini Cadet is a centrefire single shot rifle produced in the United Kingdom by BSA and W.W. Greener for the use of Australian military Cadets. Based on a miniature version of the Martini-Henry it was internally different. Chambered for the .310 Cadet also known as the .310 Greener, they were also sold to the public as the BSA No.4, 4a, 4b and 5 in other calibres like the .297/230 and .22 rimfire. The rifles will often chamber the similarly sized .32-20 Winchester and fire with some accuracy. However the 32/20 is actually 0.312 cal and the 310 is 0.323 cal. Due to this 10 thousandths difference the accuracy of a .32/20 round cannot be guaranteed.
After being sold by the Australian government many were converted to sporting or target rifles, often re-barrelled to calibres like .22 Hornet, .218 Bee, .25-20 Winchester, .222 Rimmed, .357 Magnum and others to .22 rimfire by gun makers like Sportco.