The Modern Materiel Exit 556 Muzzle Brake features 4 large horizontal ports and 4 small diameter top ports to provide maximum recoil reduction and barrel stability.  CNC machined from a solid bar of heat treated 4150 Chrome-Moly steel, this brake is built to last.

1/2″ x 28 industry standard Thread Pitch for 5.56mm carbines.

Pre-drilled 1/8″ pin hole at bottom-dead-center.

Will establish barrel length of +16″ when pinned and welded to 14.5″ barrel.

Includes crush washer.