BSA factories. Canada also used the FN, designated the FN C1 and FN C1A1, and like Britain, retained the semi-automatic-only battle rifle well after other countries forces turned to full automatic assault rifles such as the M16 and AK-47. Australia still uses the L1A1 for ceremonial use. L64/65 During the 1970s, Enfield engineers designed an assault rifle to replace the L1A1 in the Bullpup configuration but chambered in the .190 calibre (4.85 mm). This rifle had better range and ballistics than the 5.56×45mm NATO although it retained the same cartridge, necked-down for the new calibre. Like the previous EM-2, It was a bullpup and also cancelled due to NATO standardisation. However, the L64 was later chambered in 5.56×45mm NATO as the XL70 and is the main rifle that formed the basis of the SA80. Rifle 5.56mm L85 (SA80) Bullpup design creatively decreases total weapon length compared with standard assault rifles. It is easy to use not only on the battlefield, but also in areas with limited space, such as armoured personnel carriers. In 1951, the British officially adopted the EM-2 bullpup design as the "Rifle, Automatic, No.9 Mk.1". However, American insistence on the use of 7.62×51 NATO cartridges as the NATO standard meant that the rifle, which used 7 mm rounds, was shelved and the Belgian FN FAL rifle adopted. It was expected that the US would also adopt the FAL then under trial as the T48 but they selected the M14. Another Enfield attempt in the 1970s was the L64/65. Britain started a programme to find a family of related weapons to replace the L1A1 battle rifle and the Bren gun titled "Small Arms for the 1980s" or SA80. The L85 is designed for the 5.56×45mm NATO cartridge. The gas operated action has a short stroke gas piston, located above the barrel with its own return spring. The gas system has a three position gas regulator, one position for a normal firing, second for a firing in adverse conditions, and the third for launching rifle grenades (gas port is shut off). The L85A1 was improved in 1997 after constant complaints from the troops. The main problems were difficult maintenance and low reliability. These problems led British troops to nickname the weapon the "civil servant", as, in their estimation, you could not make it work and could not fire it. Improvements were made during 2000–2002 when 200,000 of the existing