Sig Sauer 9" MCX Virtus .300 AAC Blackout Barrel Assembly (1:5 Twist) with Adjustable Gas Regulator
This Sig Sauer MCX Virtus barrel assembly is chambered in .300 AAC Blackout (7.62x35mm) with a 9" barrel and 1:5 rifling twist. The short-stroke gas piston operating design simplifies maintenance and supports quick barrel/handguard swaps within the MCX Virtus platform.
Included with this setup is an 8" grey MCX Virtus handguard, a Sig Sauer three-prong muzzle device, and a two-position adjustable gas regulator. A compatible lower receiver, piston components, BCG, and charging handle are required to complete a build.