The CENTURY ARMS US Palm STORM CAT4 is a semi-automatic modern sporting rifle built around the AR platform and chambered for .223 REM/5.56 NATO. It features a 16-inch threaded, cold-hammer-forged barrel, a full-length Picatinny rail, and an M-LOK handguard for accessory mounting. Controls are fully ambidextrous and the rifle includes a Hiperfire EDT trigger and adjustable Magpul-style carbine stock for user adaptability.
Key Specifications
- The caliber is .223 REM/5.56 NATO.
- The barrel measures 16 inches.
- The barrel type is Cold Hammer Forged and is threaded.
- The thread pattern is 1/2″-28.
- The magazine capacity is 30+1 rounds.
- The trigger is a Hiperfire EDT designated marksman design.
- The receivers are Type III Hardcoat Anodized 7075-T6 aluminum.
- The handguard uses M-LOK with a continuous top Picatinny rail.
- The stock is a Magpul DT carbine adjustable polymer style.
- The rifling twist rate is 1:7.
With reinforced wear points, an accessory-ready interface, and full ambidextrous controls, the STORM CAT4 is configured for demanding use in range, training, and professional scenarios. The combination of a rigid mono-loc-style front end, a match-minded trigger design, and modern furniture provides a practical, well-equipped AR-style platform for shooters seeking robust capability and modularity.
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