Kel-Tec P11043 Polymer Magazine Extension - Adds 1 Round for .40 S&W P-11 15rd Magazines, Black Finish
$9.99
- Capacity-Rounds:
- 15
- Type:
- Magazine Extnesion
- Firearm Make Fit:
- Kel-Tec
- Caliber-Gauge:
- 40 Smith & Wesson
- Finish-Color:
- Black
- Model:
- Magazine Extension
- Material:
- Polymer
- Model Fit:
- P-11
The Kel-Tec P11043 polymer magazine extension is a straightforward way to add one extra round to your .40 S&W P-11 15-round magazines. If you carry a P-11 or shoot one regularly, that single additional round in the mag can make a difference in a defensive scenario or at the range. The extension is molded from polymer to match your gun's aesthetics and durability standards, finished in black to blend seamlessly with factory Kel-Tec magazines.
Kel-Tec designed this extension specifically for the P-11 platform, so fitment and function are engineered rather than aftermarket compromises. Installation is simple—no gunsmithing required. If you're already running P-11 mags, adding this extension to one or more of them is a practical way to squeeze out a little more capacity without switching to a different firearm or magazine system altogether.
Magazine extensions live in a practical middle ground: they're inexpensive insurance against the occasional need for an extra shot, and they're reliable enough that serious P-11 users often run them on duty or defensive carry mags. The polymer construction keeps things lightweight and rust-free, and the black finish won't show wear or corrosion over time the way bare metal might.
Key Features
- Adds 1 round to standard P-11 15-round .40 S&W magazines
- Polymer construction for durability and corrosion resistance
- Black finish matches factory Kel-Tec magazines
- Direct fitment to Kel-Tec P-11 platform—no modification needed
Specifications
| Caliber | .40 S&W |
| Firearm Compatibility | Kel-Tec P-11 |
| Magazine Capacity Increase | 1 round |
| Material | Polymer |
| Finish | Black |
| Model | P11043 |
Frequently Asked Questions
Will this extension fit my P-11 magazines?
Yes—the Kel-Tec P11043 is designed specifically for Kel-Tec P-11 15-round .40 S&W magazines. Direct fitment, no modification required.
How many extra rounds does it add?
The extension adds 1 round to your existing magazine capacity, bringing a standard 15-round P-11 mag to 16 rounds total.
Is installation difficult?
No. The extension is a direct fit to P-11 magazines and requires no gunsmithing or special tools—just snap it on and you're done.
Will polymer hold up over time?
Kel-Tec's polymer is engineered for their firearm platform and resists corrosion, wear, and degradation far better than metal. The black finish also protects against fingerprints and minor surface marks.
