SG550
The [b]SIG SG550[/B] 5.56×45mm NATO [[assault rifle]] designed and manufactured by [[SIG SAUER|Swiss Arms AG]] (former division of SIG Holding AG), adopted into service in 1990. It features a reciprocating charging handle, a [[folding stock]], an ambidextrous safety, closed bolt gas-actuated long-stroke piston mechanism and manually adjustable gas valve which make the [[rifle]] very reliable.

This tag can also apply to the slightly shorter SG551 variant, and the discontinued semi-auto only SG550-1 for [[sniper rifle|designated marksman]] role (with [[scope]] and [[bipod]]). 

h1. See also
* [[List of Weapons]]
* [[sig sg552|SIG SG552]]
* [[sig 556|SIG 556]]

h1. External links
* "IMFDb":https://www.imfdb.org/wiki/SIG_SG_550
* "Wikipedia: SIG SG550":https://en.wikipedia.org/wiki/SIG_SG_550
sig sg550