US Palm Storm CAT 4 Rifle

Overview

The US Palm Storm CAT 4 rifle represents a direct evolution in modern sporting rifle design, engineered for shooters who demand reliability under adverse conditions. Chambered in 5.56mm NATO, this platform integrates US Palm’s proprietary recoil mitigation system with a monolithic upper receiver for zero-shift retention. The US Palm Storm CAT 4 rifle is built around a patent-pending gas system that reduces fouling while maintaining consistent cycling across a wide range of ammunition pressures. Each rifle is assembled in the United States and test-fired prior to shipment, ensuring the end user receives a ready-to-deploy carbine. The Storm CAT 4 is not a parts-bin build; it is a purpose-designed system from a manufacturer with military and law enforcement pedigree.

Features & Specs

The US Palm Storm CAT 4 rifle delivers a combination of ergonomic innovation and mechanical precision that sets it apart in the 5.56mm carbine market. Below are the primary feature sets that define this platform.

• Monolithic upper receiver with continuous M-Lok attachment surface at 3, 6, and 9 o’clock positions; integral steel barrel nut eliminates receiver flex and maintains zero for optics and lasers.
• US Palm Enhanced Bolt Carrier Group with a dual-ejector bolt and a nickel boron coated carrier; the bolt is shot-peened and magnetic particle inspected for structural integrity.
• Proprietary Storm gas piston system with a three-position adjustable regulator: suppressed, normal, and adverse. This allows the operator to tune the rifle to specific ammunition or suppressor use without tools.

Additional specifications include a cold hammer-forged chrome moly vanadium barrel with a 1:7 twist rate, a free-floating handguard, and a Geissele two-stage trigger. The lower receiver is forged from 7075-T6 aluminum and features an integrated trigger guard and ambidextrous bolt catch. The US Palm Storm CAT 4 rifle ships with one 30-round Magpul PMAG and a padded soft case.

Who It’s For

The US Palm Storm CAT 4 rifle is designed for the discerning shooter who requires a duty-grade carbine without compromise. This includes law enforcement patrol officers, security professionals, and civilian shooters who train consistently and demand mechanical redundancy. If you are a competitor running three-gun matches where split times and rifle reliability are critical, the adjustable gas system and match-grade trigger offer a competitive edge. For the preparedness-minded individual building a serious battery, the Storm CAT 4 provides a platform that can be configured for home defense or field use without requiring aftermarket upgrades. This is not a budget entry-level rifle; it is a tool for those who understand the difference between a firearm and a weapon system.

Shipping & FFL

This US Palm Storm CAT 4 rifle will ship to a Federal Firearms License (FFL) holder in your state of residence. After placing your order, you must provide the contact information for your chosen receiving FFL dealer. We will verify the FFL and ship within one business day. Do not select this item for shipment to a residential address. It is your responsibility to confirm that your local laws and the receiving FFL dealer permit the transfer of a 5.56mm rifle. All sales are final upon shipment; no returns or cancellations after the item has left our facility. For questions regarding the transfer process, contact our compliance team prior to purchase.

Specifications

Manufacturer Specifications

Proprietary Storm gas piston system with a three-position adjustable regulator	suppressed, normal, and adverse. This allows the operator to tune the rifle to specific ammunition or suppressor use without tools.
SKU	ac-us-palm-storm-cat-4-rifle-b47874
Price	$1263.85
Stock Status	Instock

Frequently Asked Questions

Specifications

Manufacturer Specifications

Proprietary Storm gas piston system with a three-position adjustable regulator	suppressed, normal, and adverse. This allows the operator to tune the rifle to specific ammunition or suppressor use without tools.
SKU	ac-us-palm-storm-cat-4-rifle-b47874
Price	$1263.85
Stock Status	Instock

Frequently Asked Questions

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