# ATI S-Beam Pump MB3 - 12GA Shotgun for Defense & Hunting

**Brand:** American Tactical Imports
**Category:** Pump-Action Shotguns
**Caliber:** 12 Gauge

## Specifications

- **Caliber:** 12 Gauge
- **Barrel Length:** 18.5"
- **Capacity:** 4 rounds
- **Finish:** Smooth Bore
- **Weight:** 128 oz
- **Overall Length:** 39"
- **UPC:** 813393019784
- **SKU:** UCEJr0DWa

## Description

The American Tactical Imports S-Beam Pump MB3 is a pump-action shotgun chambered in 12 gauge with a steel receiver and synthetic stock. At 8 lbs and 39.25 inches overall, it's a straightforward working gun with no frills.

### Key Specifications
- **Caliber:** 12 GA
- **Barrel Length:** 18.5 inches
- **Capacity:** 4+1 rounds
- **Weight:** 8 lbs
- **Overall Length:** 39.25 inches
- **Condition:** New in Box
- **Manufacturer:** American Tactical Imports
- **Model Number:** ATIGMB3R

### Features
- Pump action for reliable round cycling
- Fixed stock for recoil management
- Blade front sight
- Steel receiver with synthetic stock

The MB3 works for home defense, small-game hunting, or range days. The 18.5-inch barrel keeps it maneuverable, and the 4+1 capacity is standard for a gun in this class.

## Frequently Asked Questions

**Q: What caliber is the MB3?**

A: The MB3 is chambered in 12 gauge.

**Q: Who makes the MB3?**

A: It is made by American Tactical Imports.

**Q: What is the barrel length of the MB3?**

A: It has an 18.5-inch barrel.

**Q: How many rounds does the MB3 hold?**

A: It has a 4+1 capacity.

**Q: What type of firearm is the MB3?**

A: It is a pump-action shotgun with a steel receiver and synthetic stock.

**Q: Where can I buy the MB3?**

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.*

> It's got a short barrel it is super loud and you know I keep it loaded in the closet home for home defense.
>
> — [Outdoors with Daniel](https://www.youtube.com/watch?v=jpbxtgfLSIA&t=68s)

> Haven't shot in a while it does make me wince every single time I shoot it it kicks really hard as you guys can see.
>
> — [Outdoors with Daniel](https://www.youtube.com/watch?v=jpbxtgfLSIA&t=112s)

> You want to hold it tight because if not you're gonna hit your cheek.
>
> — [Outdoors with Daniel](https://www.youtube.com/watch?v=jpbxtgfLSIA&t=170s)

> Shoulder and this is a lot of gun I know my wife couldn't shoot this thing and knock her straight on her butt.
>
> — [Outdoors with Daniel](https://www.youtube.com/watch?v=jpbxtgfLSIA&t=344s)

> This gun is pretty sweet I got the high vis clip-on 12-gauge fiber-optic sight right here it makes seeing that target real easy.
>
> — [Outdoors with Daniel](https://www.youtube.com/watch?v=jpbxtgfLSIA&t=684s)

## What Customers Say

*AI-generated insights from customer reviews*

Owners of the ATI S-Beam Pump MB3 generally find it a decent value for the price. The pump action cycles reliably, and left-handed and right-handed shooters alike find it manageable. It handles a range of 12-gauge loads without issue, which is appreciated for a budget-priced gun.

Common complaints center on build quality relative to higher-end shotguns. The fit and finish aren't going to impress anyone used to Mossberg 500-tier options. The sights are basic and work fine at close range but aren't suited for precise shots at distance.

For buyers who need a functional 12-gauge at an accessible price point, the MB3 delivers. Those wanting tighter tolerances or better aesthetics should look at stepping up the budget.

## Pricing

**2 offers available**

| Vendor | Price |
|--------|-------|
| Gunbuyer Com | $201.19 |
| Grabagun Com | $201.99 |

## Reviews

**Average Rating:** 5.0/5 (1 reviews)

> **corey5** (5/5): Mine ran roughly five hundred rounds without a hiccup, though the furniture feels slick.

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