SIG MCX 11.5″ Barrel 5.56 NATO Upper Assembly

SIG MCX 11.5″ Barrel 5.56 NATO Upper Assembly

MCX Upper Assembly

We Ship with: Upper, Bolt Carrier Group, Charging Handle, Taper Cap. This is ONLY the upper assembly.

Sig Sauer MCX Upper 11.5″ Barrel Upper Assembly, 5.56 NATO, Tapered Lug, MLOK. Available in 5.56 NATO, This item includes: a Sig Sauer MCX upper assembly, 90 degree muzzle adapter for standard non Sig Sauer suppressors, and a MCX owner’s manual. The kit features a 11.5″ barrel with a thread pitch of 5/8″ x 24 TPI.

The MCX Virtus upper receiver assembly features a standard free-floating M-LOK handguard with a top picatinny rail for sight and optic, as well as a short-stroke piston system and unique internal recoil system that eliminate the M4-style buffer tube resulting in a light-recoiling and compact platform able to be configured for any task.