# FMK Firearms G39BSTR 9mm 4.5in Black

**Brand:** FMK Firearms
**Category:** Handguns
**Caliber:** 9mm

## Specifications

- **Caliber:** 9mm
- **Barrel Length:** 4.5"
- **UPC:** 850979006943
- **SKU:** UCEysfBlv

## Description

The FMK Firearms G39BSTR is a striker-fired, semi-automatic 9mm pistol built on a polymer frame with an extended, threaded 4.5-inch barrel. It is part of FMK's Gen 3 G3 lineup and has an optics-ready slide designed for popular micro red dot sights. The pistol ships in black and uses detachable double-stack magazines.

### Key Specifications
- **Brand:** FMK Firearms
- **Model:** G39BSTR (Gen 3)
- **Caliber:** 9mm
- **Action:** Semi Auto, Striker-Fired
- **Capacity:** 17+1
- **Barrel Length:** 4.5 in
- **Color:** Black
- **Frame Material:** Polymer

### Detailed Features
- Threaded 4.5-inch barrel accepts muzzle devices such as compensators or suppressors.
- Optics-ready slide cut is sized for popular micro red dot sights.
- Ships with both 14-round and 17-round magazines for flexibility between concealment and capacity.
- Polymer frame construction keeps the pistol lightweight for range or defensive use.

## What Customers Say

*AI-generated insights from customer reviews*

The FMK G3 series, including the G39BSTR, tends to attract buyers looking for an affordable striker-fired 9mm with modern features like a threaded barrel and optics compatibility. Owners generally describe the build as solid for the price, though the polymer frame and controls don't have the same refined feel as pistols from larger manufacturers.

Ergonomically, reviews are mixed: some shooters like the grip texture and slide serrations, while others find the trigger has more takeup than pistols from more established brands. The threaded barrel is a popular feature for owners who want to add a compensator or suppressor without buying an aftermarket barrel separately.

Value is where the G39BSTR gets the most consistent praise, since it includes both a 14-round and a 17-round magazine along with an optics-ready slide at a price below many competitors. Aftermarket support is more limited than for mainstream 9mm pistols, so owners sometimes have to search harder for holsters or spare parts.

## Pricing

**1 offers available**

| Vendor | Price |
|--------|-------|
| Classicfirearms Com | $499.99 |

## Similar Products

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