SIG SG 530

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SG 530
Type	Assault rifle
Place of origin	Switzerland
Production history
Designer	Schweizerische Industrie Gesellschaft (SIG)
Designed	1960s
Manufacturer	Schweizerische Industrie Gesellschaft (SIG)
Specifications
Weight	3.45 kg (7lb 8 oz) (unloaded
Length	940 mm (37. in)

Cartridge	5.56x45mm NATO
Action	Gas operated, roller-locked
Rate of fire	600 rds/min
Muzzle velocity	912 m/s (3000 ft/s)

The SIG 530 was a Swiss assault rifle developed in the 1960s by Schweizerische Industrie Gesellschaft (SIG) to take the then-new 5.56x45mm NATO round.

[edit] Development

Development of the rifle started in 1963 as a joint project between SIG and Beretta. The latter had already cooperated with SIG on the production of the SG 510-4 rifle for Chile. Inital prototypes of the 5.56 rifle used the delayed-blowback operating system of the SG 510. However, this operating system proved to be problematic, and the designers were forced to use a gas-operated, roller-locked system. In 1968, Beretta ceased development with SIG, and went to work on their own 5.56 rifle design resulting in the outwardly similar AR70. Due to a lack of sales, SIG abandoned the SG 530 in the 1970s in favor of developing the SG 540 series.