Century Arms US Palm Storm CAT4 Rifle 5.56mm 30rd Magazine 16" Threaded Adjustable Stock Green
$1,299.99
The US PALM STORM CAT4 is a versatile 5.56 caliber rifle with a semi-automatic action, offering a 30-round capacity and a 16-inch barrel. Designed for reliability and performance, this rifle is ideal for tactical applications and home defense.
Out of stock
The STORM CAT4 is a duty-ready rifle built to exceed expectations—delivering premium $2000+ rifle performance at an attainable $1300 price point. Designed by experts who live and breathe the AR platform the STORM CAT4 was built for shooters who demand more without overpaying for a name.
Every critical wear point has been reinforced with hardened user-serviceable components to ensure long-term durability and reliability under hard use. Fully ambidextrous controls provide seamless operation in any environment while an innovative upper-to-handguard interface enhances rigidity—maximizing mechanical accuracy and ensuring repeatability for laser aiming systems.
Ergonomics are dialed in with a complete in-house designed grip engineered with user inputs to maximize control and comfort. A hybrid flash hider reduces both flash signature and felt recoil keeping you on target when it matters most. Built without compromise. Engineered with purpose. When conditions are at their worst the CAT4 stands ready—because when you step into the storm your rifle shouldn’t have weak points.
Features:
- Upper Receiver: Type III Hardcoat Anodized 7075-T6 Aluminum
- Lower Receiver: Type III Hardcoat Anodized 7075-T6 Aluminum
- Furniture: US Palm 7-Sided M-LOK Rail US Palm Grip Magpul DT Carbine Stock
- Barrel: Cold Hammer Forged 4150 Chrome Moly Steel
- Magazine Capacity: 30-rounds
- Sight Configuration: Optic-ready Full Length Picatinny Rail
- Trigger: Hiperfire® EDT Designated Marksman Trigger
| Manufacturer | Century Arms |
|---|---|
| Action | Semi-Automatic |
| Caliber | 5.56 |
| Barrel Length | 16″ |
| Capacity | 30+1 |
| Finish | green |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.

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