556 is the year 556 AD.
556 may also refer to:
The Mini-14 is a lightweight semiautomatic rifle manufactured by Sturm, Ruger & Co. used by military personnel, law-enforcement personnel, and civilians. A .223 caliber firearm, it is made in a number of variants, including: the Ranch Rifle, the Mini-14 GB, and the Mini Thirty, which is chambered for 7.62×39 mm.
The 223 Remington is a rimless, bottlenecked rifle cartridge. It was developed in 1957 by Remington Arms and Fairchild Industries for the U.S. Continental Army Command of the United States Army as part of a project to create a small-caliber, high-velocity firearm. The 223 Remington is considered one of the most popular cartridges and is currently used by a wide range of semi-automatic and manual-action rifles as well as handguns.
The China Ordnance Industries Group Corporation Limited, also known as China North Industries Group Corporation Limited, officially abbreviated as Norinco, is a Chinese state-owned defense corporation that manufactures a diverse range of civil and military products. It is also involved in domestic civil construction and military defense projects. Norinco is one of the world's largest defense contractors.
INSASor Indian Small Arms System is a family of infantry arms consisting of an assault rifle and a light machine gun (LMG). It was designed by the Armament Research and Development Establishment and manufactured by the Ordnance Factories Board at its various factories. The INSAS assault rifle was the standard infantry weapon of the Indian Armed Forces for almost three decades.
A designated marksman rifle (DMR) is a modern scoped high-precision rifle used by infantrymen in the designated marksman (DM) role. It generally fills the engagement range gap between a standard service rifle and a dedicated sniper rifle, at around 300–600 metres (330–660 yd).
The Heckler & Koch HK417 is a battle rifle and designated marksman rifle. It is designed and manufactured by Heckler & Koch in Germany.
The SG 550 is an assault rifle manufactured by Swiss Arms AG in Switzerland. "SG" is an abbreviation for Sturmgewehr. The rifle is based on the earlier 5.56×45mm NATO SIG SG 540.
A STANAG magazine or NATO magazine is a type of detachable firearm magazine proposed by NATO in October 1980. Shortly after NATO's acceptance of the 5.56×45mm NATO rifle cartridge, Draft Standardization Agreement (STANAG) 4179 was proposed in order to allow NATO members to easily share rifle ammunition and magazines down to the individual soldier level. The U.S. M16 rifle's magazine proportions were proposed for standardization. Many NATO members, but not all, subsequently developed or purchased rifles with the ability to accept this type of magazine. However the standard was never ratified and remains a "Draft STANAG".
The SIG SG 530 was a Swiss assault rifle developed in the 1960s by Schweizerische Industrie Gesellschaft (SIG) to take the then-new 5.56×45mm NATO round.
The SG 540 is a 5.56×45mm NATO assault rifle developed in the early 1970s by Schweizerische Industrie Gesellschaft of Neuhausen, Switzerland as a private venture primarily destined for export markets and as a potential replacement for the 7.5×55mm Swiss SG 510 automatic rifle known as the Stgw 57 in Swiss service.
Jednostka Wojskowa Formoza,, previous names: Sekcje Działań Specjalnych Marynarki Wojennej, Grupy Specjalne Płetwonurków.
The SIG Sauer 200 STR, also known as the SIG Sauer 200 STR Match, is a bolt action rifle mostly used as a target/competition rifle for national competitions by Norwegian, Swedish and Danish sport shooters. It is a variant of the Sauer 200 TR or SIG Sauer 200 TR Match rifle that features thicker 19 mm (0.75 in) diameter barrels. The 200 STR is produced by J. P. Sauer & Sohn GmbH in Germany.
The SR-556 is a semiautomatic AR-15 style rifle manufactured by U.S. firearms company Sturm, Ruger & Co. The rifle was introduced in 2009 in 223 Remington/5.56×45mm NATO and as a .308 Winchester AR-10 variant in 2013, the SR-762. It is one of several 21st-century AR-15 rifles to use gas piston operation (SR-556). In January 2016 Ruger discontinued all SR-556 rifles and introduced a new takedown variant with a lightweight KeyMod handguard.
The SIG Sauer SIG516 is a semi-automatic rifle manufactured by SIG Sauer. It is an AR-15 style rifle chambered in 5.56×45mm NATO. Introduced in 2010, the SIG516 was discontinued as of 2019. A variant chambered in 7.62x51mm NATO, the SIG716, remains in production.
The SIGM400 is a family of firearms manufactured by SIG Sauer. The M400 is an air-cooled, direct impingement gas-operated, magazine-fed carbine that is based on the earlier AR-15 rifle. Depending on the variant, it can be chambered for 5.56×45mm NATO or .300 AAC Blackout cartridges, and may have a fixed or telescoping stock.
The SIG MCX is a family of firearms designed and manufactured by SIG Sauer, produced in both selective fire and semi-automatic only models, and features a short-stroke gas piston system, which is inherited from the earlier SIG MPX submachine gun. The MCX is available in rifle, carbine, short-barreled rifle, and pistol configurations.
The CS/LR17/CS/LR18 Modular Automatic Rifle is a "new generation" family of modular rifles developed by NORINCO with marketing to be done by Jianshe Industry Group.
The Haenel MK 556 is a gas-operated selective-fire 5.56×45mm NATO assault rifle designed by C.G. Haenel in Germany. The MK556 was finalised in September 2020, and it is a fully automatic version of an earlier Haenel design, the CR 223, which was already in limited use by law enforcement agencies since 2017. On 14 September 2020, the Haenel MK 556 was selected by the German Armed Forces (Bundeswehr) as a replacement for the G36, making it the first service rifle used by the Bundeswehr produced by a company other than Heckler & Koch, who had submitted their own designs.