SG 553 SOW Cal. 223R

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SG 553 SOW Cal. 223R

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The SIG SG553 is an extremely flexible, very compact and light primary intervention weapon for Special Forces and the field of Law Enforcement in calibre 5.56 mm x 45 NATO (.223 Rem.). Due to its robust design, compact dimensions, its outstanding precision and the ability to aim rapidly, it is ideally suited for use in short to medium distance up to 300 meters. In all types of environment and terrain from desert, jungle or in arctic climate zones the performance is outstanding. For Close Protection and Counter Terrorism duties, this weapon is easy to conceal and operate.


  • Gas operated
  • Gas valve adjustable in two possible positions with round bolt
  • 5,56 x 45 mm NATO
  • Cold hammered forged barrel
  • Ambidextrous handling
  • Three firing modes: semi auto, 3 round burst, full auto (also exclusively available as semi-automatic version)
  • Adjustable diopter rear sight, front sight with cover
  • Retractable Swiss Army butt stock optionally with adjustable butt stock
  • Optional M1913 accessory rail
  • Semitransparent polymer magazine, 30% more lightweight than metal
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SG 553 LB (Long Barrel) / SG 553 SB (Short Barrel)

Caliber: 5,56 mm (.223 Rem.)
Overall length: 822 mm/32,36″ (LB), 730 mm/28,74″ (SB)
Overall hight: 210 mm/8,27″
Length with butt stowed: 593 mm/23,35″ (LB), 501 mm/19,72″ (SB)
Barrel length LB (with flash hider): 347 mm/13,66″
Barrel length SB (without flash hider): 227 mm/8,94″
Rifling Lead: 178 mm/7″ (LB), 254 mm/10″ (SB)
No. of grooves: 6
Sight base: 339 mm/13,35″
Weapon weight: 3,4 kg/7.5 lbs. (LB), 3,2 kg/7.1 (SB)
Magazine capacity: 5, 10, 20, 30
Mag. Weight with 20, 30 rounds: 340 g/11.99 oz., 480 g/16.93 oz.
Combat weight with 120 rounds: 5,4 kg/11.90 lbs (LB), 5,2 kg/11.46 lbs (SB)
Weight of empty mag. 20, 30 rounds: 95 g/3.35 oz., 110 g/3.38 oz.
Trigger pull weight: 35 N (3,5 kg)
Muzzle energy: 1480 J (LB), 1240 J (SB)
Cyclic rate: approx. 700-800 rounds/min (LB), approx. 700-850 rounds/min (SB)
Function principle: Gas operated
Bolt pattern: Rotating bolt

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