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FN CAL vs Ruger AC-556
Side-by-side technical comparison
Ruger AC-556
RiflesDiscontinued
Overview
Spec
FN CAL
Ruger AC-556
Production
1966–1975
1982–1994
Units produced
Approximately 30,000
Approximately 5,000
Specifications
Spec
FN CAL
Ruger AC-556
Overall length
980 mm
946 mm
Barrel length
451 mm
330 mm
Weight
3.35 kg
3.06 kg
Magazine capacity
20 rounds
20 rounds
Action type
Gas-operated, rotating bolt
Gas-operated, rotating bolt
Trigger type
Selective fire
Selective fire
Sights
Adjustable front post, aperture rear
Adjustable front post, aperture rear
Calibers
FN CAL
Ruger AC-556