The Sig Sauer R556xi chambered in .300 Blackout is a semi-automatic AR-style rifle built around a 10 inch barrel for a compact, versatile setup. Factory configuration supports common muzzle-device mounting through a threaded barrel and accepts standard .300 Blackout AR magazines for quick follow-up shots.
Key Features
10 inch .300 Blackout AR-style configuration for a compact rifle length
Semi-automatic, gas-operated rotating-bolt system
Threaded barrel for compatibility with muzzle devices
30-round magazine capacity for practical field use
If you want a compact .300 Blackout AR platform from a major manufacturer, the Sig Sauer R556xi is a strong choice for range and general-purpose use.
