SG 553 SOW Cal. 223R

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

SG 553 LB (Long Barrel) / SG 553 SB (Short Barrel)


Overall length
Overall hight
Length with butt stowed
Barrel length LB

(with flash hider)
Barrel length SB

(without flash hider)
Rifling Lead
No. of grooves
Sight base
Weapon weight
Magazine capacity
Mag. Weight

with 20, 30 rounds
Combat weight

with 120 rounds
Weight of empty

mag. 20, 30 rounds
Trigger pull weight
Muzzle energy
Cyclic rate

Function principle
Bolt pattern

5,56 mm (.223 Rem.)

822 mm/32,36" (LB), 730 mm/28,74" (SB)

210 mm/8,27"

593 mm/23,35" (LB), 501 mm/19,72" (SB)


347 mm/13,66"


227 mm/8,94"

178 mm/7" (LB), 254 mm/10" (SB)


339 mm/13,35"

3,4 kg/7.5 lbs. (LB), 3,2 kg/7.1 (SB)

5, 10, 20, 30


340 g/11.99 oz., 480 g/16.93 oz.


5,4 kg/11.90 lbs (LB), 5,2 kg/11.46 lbs (SB)


95 g/3.35 oz., 110 g/3.38 oz.

35 N (3,5 kg)

1480 J (LB), 1240 J (SB)

approx. 700-800 rounds/min (LB),

approx. 700-850 rounds/min (SB)

Gas operated

Rotating bolt


NEW: available alluminium lower receiver for standard nato magazine