An SX4 that will turn heads. Resist the elements and reduce glare with the Cerakote FDE finish on the SX4 Hybrid Hunter shotgun. Combined with Mossy Oak Bottomland camouflage, you'll get the drop on ducks and geese. The refined SX4 is based on the bullet prove Active Valve system that was the core foundation of the SX3. they built on that solid operating mechanism and improved the balance, controls, and internal operating components of the SX4 to make it a worthy successor to the SX3.