page_title: SIG SG 550
section_title: SG 553
hierarchical_section_title: SIG SG 550 / Variants / SG 553
caption_attribution_description: English: The Force Protection Team officer of PASKAU standing at the exit door during the Langkawi International Maritime and Aerospace Exhibition 2009 or LIMA 2009 at Langkawi Airport. He holding the SIG SG 553LB assault rifle and equipped with EOTech holographic sight and Brügger &amp; Thomet suppressor. Taken by me at Langkawi Airport, Langkawi, Kedah, Malaysia. Deutsch: Der Kraft Schutzmannschaftsoffizier von PASKAU Stehen an der Ausgangtür während der Langkawi Internationalen See und Luft- und Raumfahrtausstellung 2009 oder LIMA 2009 an Langkawi Flughafen. Er, hält den das SIG SG 553LB Angriff Gewehr und mit EOTech holographischem Sehvermögen und Brügger &amp; Thomet Entstörer ausgerüstet hat. Genommen durch mich an Langkawi Flughafen, Langkawi, Kedah, Malaysia. Português: O oficial de Equipa de Protecção de Força de posição de PASKAU na porta de saída durante o Langkawi Internacional Exposição Marítima e Aeroespacial 2009 ou LIMA 2009 em Aeroporto de Langkawi. Segurando o rifle de ataque 553LB DE SG DE SIG e equipou com EOTech visão holográfica e Brügger &amp; suppressor de Thomet. Tomado por mim em Aeroporto de Langkawi, Langkawi, Kedah, Malásia.
context_page_description: The SG 550 is an assault rifle manufactured by Swiss Arms AG in Switzerland. "SG" is an abbreviation for Sturmgewehr, or "assault rifle". The rifle is based on the earlier 5.56mm SG 540.
context_section_description: The SG 553 is an improved version of the SG 552 and was released in 2008. Even though it mostly resembles the SG 552, the SG 553 has one key advantage, the recoil spring is now wrapped around the piston rod as in the SG 550/551 models, which address several reliability issues encountered in the SG 552 and also allows the usage of the standard SG 550/551 charging handle. The SG 553 series rifles have a 339 mm (13.3 in) long sight radius. A long barrel version of the SG 553 known as the SG 553 LB incorporates a 347 mm (13.7 in) barrel with provision to fire rifle grenades and support a bayonet. Further factory options for the SG 553 rifle series are an integrated receiver Picatinny rail and an adjustable butt stock. The SG 553 R is a variant chambered for the 7.62×39mm cartridge fed from AK family box magazines.
caption: SG 553 in the hands of Malaysian Air Force PASKAU commando during LIMA 2009
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