Sig Sauer MCX-SPEAR LT Barrel & Gas Block Assembly (.300 AAC Blackout)
Factory SIG SAUER MCX-SPEAR LT barrel and gas block assembly chambered in .300 AAC Blackout (7.62x35mm). This is the complete barrel/gas system assembly with the gas valve and piston.
The barrel is marked "300 BLK" and includes an installed muzzle device.




