Sig Sauer MCX-SPEAR LT 5.56 NATO 11.5" Barrel & Gas Block Assembly

The Sig Sauer MCX-SPEAR LT Barrel and Gas Block Assembly is a factory replacement assembly for the MCX-SPEAR LT rifle platform. This complete drop-in unit gives the shooter a refreshed, factory-spec 11.5-inch barrel paired with the matching gas block, gas valve, and gas piston system in a single package.

Chambered in 5.56x45mm NATO, the assembly ships as a complete factory unit including the barrel extension, barrel, gas block, gas valve, gas piston, and flash hider - the same components found on a factory MCX-SPEAR LT. The barrel is machined from stainless steel, finished in black, and threaded 1/2x28 to accept standard 5.56 muzzle devices and suppressors.

Designed as a direct replacement or upgrade for existing MCX-SPEAR LT owners, this assembly allows the user to restore factory accuracy and reliability, replace a worn barrel, or refresh the gas system on the host firearm with factory-engineered components.