# US Palm Cat4 Storm 5.56 NATO 11.5in Matte Black

**Brand:** US PALM
**Category:** AR Style Rifles
**Caliber:** 5.56 NATO

## Specifications

- **Caliber:** 5.56 NATO
- **Barrel Length:** 11.5"
- **UPC:** 787450951501
- **SKU:** UCDrXLwUP

## Description

The US Palm Cat4 Storm is an AR-15 pistol chambered in 5.56 NATO with an 11.50-inch cold hammer forged threaded barrel and a 30+1 capacity. It has a matte black receiver with a Picatinny rail, a Mono-Loc MLOK handguard, and ships with a Magpul BTR arm brace. The pistol includes a Hiperfire trigger and US Palm grip.

### Key Specifications
- **Brand**: US Palm
- **Model**: Cat4 Storm
- **Caliber**: 5.56 NATO
- **Action**: Semi Auto
- **Capacity**: 30+1
- **Barrel Length**: 11.50 inches (threaded, cold hammer forged)
- **Color/Finish**: Matte Black

### Detailed Features
- Cold hammer forged threaded barrel
- Magpul BTR arm brace
- Mono-Loc MLOK handguard
- Hiperfire trigger
- US Palm grip with Picatinny rail receiver

## Frequently Asked Questions

**Q: What caliber is the Cat4 Storm?**

A: The US Palm Cat4 Storm is chambered in 5.56 NATO.

**Q: Who makes the Cat4 Storm?**

A: The Cat4 Storm is made by US Palm.

**Q: What type of firearm is the Cat4 Storm?**

A: It is an AR-15 pistol with a matte black receiver, Mono-Loc MLOK handguard, and a Magpul BTR arm brace.

**Q: What is the barrel length of the Cat4 Storm?**

A: The Cat4 Storm has an 11.5-inch cold hammer forged threaded barrel.

**Q: How many rounds does the Cat4 Storm hold?**

A: It has a capacity of 30+1 rounds.

**Q: Is the Cat4 Storm threaded?**

A: Yes, the Cat4 Storm ships with a threaded barrel.

**Q: Where can I buy the Cat4 Storm?**

A: Compare current vendor offers on this page.

## What Customers Say

*AI-generated insights from customer reviews*

Owners of the US Palm Cat4 Storm highlight the Hiperfire trigger as a standout factory inclusion. Getting an upgraded trigger from the factory at this configuration is unusual and frequently mentioned as a genuine value-add. The cold hammer forged barrel is also appreciated for its durability reputation.

The Magpul BTR arm brace is comfortable and adjustable, which suits a range of users. The MLOK handguard gives the pistol a clean profile and practical accessory mounting. The overall package is compact and well-spec'd for a braced AR pistol.

Some owners find the US Palm grip narrower than preferred, which is a matter of personal fit. The 11.5-inch barrel in 5.56 NATO produces significant muzzle blast, which is a known characteristic of this barrel-length class rather than a deficiency of the Cat4 specifically.

## Pricing

**9 offers available**

| Vendor | Price |
|--------|-------|
| Impactguns Com | $1239.89 |
| Deguns | $1299.99 |
| RK Guns | $1299.99 |
| Guns Com | $1299.99 |
| Classicfirearms Com | $1299.99 |
| Buds Gun Shop | $1299.99 |
| Grabagun Com | $1299.99 |
| Selwayarmory Com | $1299.99 |
| Globalordnance Com | $1299.99 |

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*Data from [GunsNation](https://gunsnation.com)*