The Kel-Tec P11043 is a magazine extension built for the P-11 15-round .40 S&W magazine, adding 1 extra round of capacity in a simple, drop-in swap.

Key Specifications

• Adds 1 extra round to your Kel-Tec P-11 15-round magazine.
• Built specifically for the Kel-Tec P-11.
• Chambered for .40 S&W.
• Molded from black polymer.
• Classified by Kel-Tec as a Magazine Extension.
• Compatible specifically with Kel-Tec-brand magazines per the manufacturer’s brand-fit listing.
• Installs as a drop-in replacement for the factory magazine base plate.
• Works as a simple, affordable way to add a round to your carry or range spare.
• No gunsmithing or special tools required to install.

Frequently Asked Questions

How many rounds does this extension add? It adds 1 extra round to your Kel-Tec P-11 15-round magazine.

Will it fit other Kel-Tec models? No — it’s built specifically for the Kel-Tec P-11; confirm your exact pistol and magazine before ordering.

Buy the Kel-Tec Magazine Extension for P-11 15rd Magazine

Ships fast from a Lubbock, TX gun shop on the Kel-Tec Magazine Extension for P-11 15rd Magazine from KelTec, part of our Pistol Grips selection. Add a round of capacity to your P-11 magazine with this drop-in extension.