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SIG SG510
SG510
Designer(s)

SIG

Production began

1957

Production ended

1983

Weapon type

Battle Rifle

Caliber

7.62 x 51 mm NATO

Action

Roller-delayed blowback

Overall length

39.95 inches (SG 510-4)

Barrel length

19.9 inches (SG 510-4)

Weight

5kg

Magazine/Cylinder capacity

20 rounds

Cyclic rate

475-500 rpm

Maximum effective range

effective approx. 460m maximum approx. 3,725m

Muzzle velocity

2495 fps

The SIG SG 510 or Sturmgewehr 57 (Stgw 57) is a battle rifle manufactured by Schweizerische Industrie Gesellschaft (now SAN Swiss Arms) of Switzerland. It is based on the same roller-delayed blowback system used in the earlier AM55 rifle, which, in turn, was borrowed from the legendary MG-42. It is renowned for being rugged, reliable, and incredibly accurate, even in harsh climatic conditions. It is also famous for being one of the most finely-crafted battle rifles ever issued to a military. The Stgw 57 was chambered for the GP11 (174gr. FMG, traveling at 2,495 fps) 7.5x55 Swiss round, fed from a 24- round box magazine. It weighed 12.25lbs. unloaded, had It was capable of semi-auto and full-auto fire. It had folding diopter sights, The SG 510-1 was simply a Stgw 57, rechambered for 7.62x51mm NATO. The SG 510-2 was identical to the SG 510-1, but had a smaller barrel jacket to lower the weight of the weapon. The SG 510-3 was chambered in 7.62x39mm. The SG 510-4, the most successful variant of the series, was the lightest of all, weighing 10.5lbs and had a rate of fire of 600 round per minute. The folding diopter sights of earlier models were replaced by simple fixed sights. Civilian legal variants were also produced. The PE57 was the civilian variant of the Stgw 57 and the SIG AMT (American Match Target) was the civilian variant of the SG 510-4. Upon compleation of service, soldiers could choose to take home their service rifle, albeit converted to semi-auto only.

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