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SG 550 | |
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![]() The SIG SG 550 | |
Type | Assault rifle (SG 550) Carbine (SG 551, SG 552 and SG 553) Sniper rifle (SG 550-1 Sniper) |
Place of origin | Switzerland |
Service history | |
In service | 1990–present |
Used by | See Users |
Wars | War in Afghanistan (2001–2021) Sinai insurgency 2013 Lahad Datu standoff[1] Yemeni Civil War (2014–present) |
Production history | |
Designer | Schweizerische Industrie Gesellschaft |
Designed | 1970s–1980s |
Manufacturer | SIG Sauer AG (formerly Schweizerische Industrie Gesellschaft and Swiss Arms) |
Produced | 1986–present |
No. built | 600,000 |
Variants | See Variants |
Specifications | |
Mass | 4.1 kg (9.04 lb) |
Length | 1,000 mm (39.4 in) (stock extended) 772 mm (30.4 in) (stock folded) |
Barrel length | 528 mm (20.8 in) |
Cartridge |
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Action | Gas operated, rotating bolt |
Rate of fire | ~700 rounds/min |
Muzzle velocity | 911 m/s (2,989 ft/s) |
Effective firing range | 100–400 m sight adjustments |
Feed system |
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Sights | Rear: rotating diopter drum with tritium night inserts; front: hooded post with folding night post 540 mm (21.3 in) sight radius (SG 550) |
The SG 550 is an assault rifle manufactured by SIG Sauer AG (formerly a division of Schweizerische Industrie Gesellschaft, now known as SIG Holding AG) in Switzerland. "SG" is an abbreviation for Sturmgewehr ("assault rifle"). The rifle is based on the earlier 5.56×45mm NATO SIG SG 540.
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