US Palm Storm CAT 4 Rifle – Precision 5.56mm Carbine

The US Palm Storm CAT 4 rifle represents a deliberate balance of weight savings and battlefield-proven ergonomics. Chambered in 5.56mm NATO, this carbine is engineered for shooters who demand a reliable platform without unnecessary bulk. Every component, from the free-floated handguard to the adjustable stock, is designed for consistent performance under routine use. Whether you are building a primary defensive carbine or upgrading your range setup, the US Palm Storm CAT 4 rifle delivers a confident shooting experience.

Overview

The US Palm Storm CAT 4 is a direct-impingement rifle built on a forged 7075-T6 aluminum receiver. It features a 16-inch chrome-lined barrel with a 1:7 twist rate, optimized for stabilizing 55- to 77-grain 5.56mm ammunition. The rifle incorporates US Palm’s proprietary bolt carrier group with a enhanced extractor and chrome-plated firing pin for reliable ignition. The handguard is a slim, M-Lok compatible design that reduces overall weight while maintaining rigidity for accessory mounting. This model is a purpose-built carbine for shooters who prioritize function over flash.

Features & Specs

• Receiver and Barrel: Forged 7075-T6 aluminum upper and lower receivers. 16-inch chrome-lined 4150 steel barrel with a 1:7 twist, M4 feed ramps, and a standard A2 flash hider.
• Operating System: Direct impingement with a US Palm enhanced bolt carrier group. Includes a chrome-plated firing pin, dual ejector springs, and a high-pressure tested bolt.
• Handguard and Furniture: US Palm Storm free-float M-Lok handguard (12.5-inch) with integrated heat shield. Adjustable 6-position buttstock with a rubber buttpad and a US Palm pistol grip with storage compartment.
• Sights and Optics: Flip-up rear sight and front sight post included. Flat-top upper with a Picatinny rail for optic mounting.
• Caliber: 5.56mm NATO (also accepts .223 Remington).
• Weight: 6.8 pounds (unloaded). Overall length: 32-35 inches (stock collapsed to extended).
• Capacity: Accepts all standard AR-15 pattern magazines. Ships with one US Palm 30-round magazine.

Who It Is For

The US Palm Storm CAT 4 rifle is designed for the practical shooter who needs a reliable 5.56mm carbine for home defense, range training, or patrol use. It suits the enthusiast who values a lightweight build without sacrificing accuracy or durability. The adjustable stock and slim handguard make it manageable for shooters of varying sizes, while the chrome-lined barrel ensures longevity for high-volume shooters. If you require a no-frills, field-ready platform that performs consistently with standard ammunition, this rifle is a direct fit. It is not a competition race gun or a precision benchrest rifle; it is a working carbine built for real-world handling.

• Home defense and personal protection applications
• Range training and skill development
• Patrol and duty use (compatible with standard accessories)

Shipping & FFL

This US Palm Storm CAT 4 rifle is a Title I firearm and must be shipped to a Federal Firearms License (FFL) holder for transfer. After placing your order, you will receive a confirmation email with instructions to provide your chosen FFL dealer’s contact information. We require the receiving dealer to send us a signed copy of their license before shipment. Please verify with your local FFL that they accept transfers from online retailers and understand their state and local laws regarding rifle ownership. We ship via a licensed carrier and require an adult signature upon delivery. All sales are final once the item is transferred to the FFL. You must comply with all applicable federal, state, and local laws to take possession of this rifle.

• Shipment to a licensed FFL dealer only. No direct-to-consumer shipping.
• Include your chosen FFL’s information during checkout. We will confirm receipt and coordinate.
• Adult signature required at delivery. Check your local laws before ordering.

Specifications

Manufacturer Specifications

Receiver and Barrel	Forged 7075-T6 aluminum upper and lower receivers. 16-inch chrome-lined 4150 steel barrel with a 1:7 twist, M4 feed ramps, and a standard A2 flash hider.
Operating System	Direct impingement with a US Palm enhanced bolt carrier group. Includes a chrome-plated firing pin, dual ejector springs, and a high-pressure tested bolt.
Handguard and Furniture	US Palm Storm free-float M-Lok handguard (12.5-inch) with integrated heat shield. Adjustable 6-position buttstock with a rubber buttpad and a US Palm pistol grip with storage compartment.
Sights and Optics	Flip-up rear sight and front sight post included. Flat-top upper with a Picatinny rail for optic mounting.
Caliber	5.56mm NATO (also accepts .223 Remington).
Weight	6.8 pounds (unloaded). Overall length: 32-35 inches (stock collapsed to extended).
Capacity	Accepts all standard AR-15 pattern magazines. Ships with one US Palm 30-round magazine.
SKU	ac-us-palm-storm-cat-4-rifle-04766d
Price	$1263.85
Stock Status	Instock

Frequently Asked Questions

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