US Palm STORM CAT4 5.56 NATO 11.5 in. Pistol

The Century Arms US Palm STORM CAT4 is a semi-automatic pistol chambered in 5.56 NATO. It features an 11.5-inch cold hammer forged barrel, ambidextrous controls, a black finish, an M-LOK handguard, and a full-length Picatinny rail for compatible accessories.

Built with 7075-T6 aluminum receivers and a 4150 chrome-moly steel barrel, the CAT4 is designed for range use and practical handling. Its optic-ready rail, adjustable furniture configuration, threaded muzzle, and Hiperfire EDT trigger provide a versatile platform for informed shooters.

Key Specifications

• The pistol is chambered in 5.56 NATO.
• The semi-automatic action provides self-loading operation.
• The cold hammer forged barrel measures 11.5 inches and has a black finish.
• The barrel uses a 1/2x28 thread pattern.
• The platform includes a US Palm Hurricane Flash Hider.
• The receiver set is made from Type III hardcoat anodized 7075-T6 aluminum.
• The handguard features M-LOK compatibility.
• The full-length rail is Picatinny and optic-ready.
• The rifling has a 1:7 twist rate.
• The listed unloaded weight is 6 pounds.

With its compact barrel, ambidextrous controls, modular handguard, and durable construction, the STORM CAT4 offers a practical configuration for range sessions and accessory setups. Its combination of 5.56 NATO chambering, threaded barrel, optic-ready rail, and refined trigger makes it a well-equipped addition to a modern sporting collection.