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Ruger SR-556 vs SIG MCX
Side-by-side technical comparison
Ruger SR-556
RiflesDiscontinued
Overview
Spec
Ruger SR-556
SIG MCX
Production
2009–2016
2015–present
Units produced
Limited
Unknown
Specifications
Spec
Ruger SR-556
SIG MCX
Overall length
890 mm
635–900 mm
Barrel length
406 mm
191–406 mm
Weight
3.9 kg
2.9–3.6 kg
Magazine capacity
30 rounds
30 rounds
Action type
short-stroke gas piston
short-stroke gas piston
Trigger type
single-stage
two-stage
Sights
Folding sights, optics-ready
Flip-up sights, optics rail
Calibers
Ruger SR-556