# US Palm CAT4 Storm 5.56 NATO 16in Black

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

## Specifications

- **Caliber:** 5.56 NATO
- **Barrel Length:** 16"
- **UPC:** 787450951532
- **SKU:** UCDrXLwUu

## Description

The US Palm CAT4 Storm is an AR-15 rifle chambered in 5.56 NATO with a 16-inch cold hammer forged barrel. It holds 30+1 rounds and ships with a US Palm grip, Magpul stock, Hiperfire trigger, and a Mono-Loc M-LOK handguard. The finish is black throughout.

### Key Specifications
- **Brand**: US Palm
- **Model**: CAT4 Storm
- **Caliber**: 5.56 NATO
- **Action**: Semi Auto
- **Capacity**: 30+1
- **Barrel Length**: 16 in
- **Color/Finish**: Black

### Detailed Features
- 16-inch cold hammer forged barrel in 5.56 NATO
- 30+1 round capacity
- Hiperfire trigger installed from the factory
- Magpul stock and US Palm grip
- Mono-Loc M-LOK handguard for accessory attachment

## Frequently Asked Questions

**Q: What caliber is the CAT4 Storm?**

A: The 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 a semi-automatic AR-style rifle.

**Q: What is the barrel length of the CAT4 Storm?**

A: The CAT4 Storm has a 16-inch cold hammer forged barrel.

**Q: How many rounds does the CAT4 Storm hold?**

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

**Q: What stock and grip does the CAT4 Storm come with?**

A: It ships with a Magpul stock and a US Palm grip from the factory.

**Q: What handguard does the CAT4 Storm use?**

A: The CAT4 Storm uses a Mono-Loc M-LOK handguard.

**Q: Where can I buy the CAT4 Storm?**

A: Compare current vendor offers on this page.

## What Reviewers Say

*Quoted verbatim from YouTube reviews. Each link opens the video at the moment quoted.*

> For the fitment on there, if I'm being honest, I think it should be better on that that that overall fitment between the upper and the lower.
>
> — [Hunt Fish Shoot](https://www.youtube.com/watch?v=ShnifU8yqMg&t=44s)

> Consistently shooting a really good let's say inch and a half group out of this gun using 55-grain Federal American Eagle stuff.
>
> — [Hunt Fish Shoot](https://www.youtube.com/watch?v=ShnifU8yqMg&t=80s)

> It's a little bit on the heavy side. Uh it's definitely on the upper echelon to 5 and 1/2 lb, but it does feel pretty good.
>
> — [Hunt Fish Shoot](https://www.youtube.com/watch?v=ShnifU8yqMg&t=204s)

> It feels better than you know the Daniel Defense rifles. Would I say that this thing's built like a Daniel Defense? No.
>
> — [Hunt Fish Shoot](https://www.youtube.com/watch?v=ShnifU8yqMg&t=266s)

> I like the ambi features, but if you're if you're familiar with me on this channel, I just don't really care that much about full ambi features.
>
> — [Hunt Fish Shoot](https://www.youtube.com/watch?v=ShnifU8yqMg&t=411s)

## What Customers Say

*AI-generated insights from customer reviews*

Owners of the US Palm CAT4 Storm consistently single out the cold hammer forged barrel and the factory Hiperfire trigger as the standout features. Getting a quality trigger pre-installed is something buyers appreciate, since it removes one of the first aftermarket expenses on most AR builds.

The Magpul stock and US Palm grip combination gets good marks for comfort, though some shooters find the grip angle slightly different from a standard AR setup and need a short break-in period. The Mono-Loc M-LOK handguard provides solid real estate for lights and other accessories.

The CAT4 Storm occupies a crowded segment, and a few owners note the US Palm brand carries less name recognition than competitors at the same price. Those who do seek it out tend to be happy with the overall parts specification, though the resale market for US Palm rifles is thinner than for more mainstream AR brands.

## Pricing

**9 offers available**

| Vendor | Price |
|--------|-------|
| 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 |
| Centerfiresystems Com | $1299.99 |

## Similar Products

- [US Palm Cat4 Storm 5.56 NATO 11.5in Matte Black](https://gunsnation.com/p/us-palm-cat4-storm-5-56-nato-11-5in-matte-black/UCDrXLwUP)
- [Hi-Point HP-15 5.56 NATO 16in Desert Storm](https://gunsnation.com/p/hi-point-hp-15-5-56-nato-16in-desert-storm/UCDFCqZmr)
- [Dark Storm Industries DS-15 Typhoon Standard 5.56 NATO 16in Copperhead Brown](https://gunsnation.com/p/dark-storm-industries-ds-15-typhoon-standard-5-56-nato-16in-copperhead-brown/UC8johVKC)
- [Dark Storm Industries DS-15 Typhoon Standard 5.56 16in Black](https://gunsnation.com/p/dark-storm-industries-ds-15-typhoon-standard-5-56-16in-black/UC8johMjr)
- [Unbranded NTRE 5.56 NATO 16in Black](https://gunsnation.com/p/unbranded-ntre-5-56-nato-16in-black/UCEHJiyfM)
- [DPMS DPM4 5.56 NATO 16in Black](https://gunsnation.com/p/dpms-dpm4-5-56-nato-16in-black/UCEGIw026)

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