This Warne capacity-adding magazine extension (part no. 3313) adds capacity to a compatible Smith & Wesson M&P 9/40 magazine. The magazine itself is not included.

Key Specifications

• Adds 5 rounds of capacity to a compatible magazine.
• Built for Smith & Wesson M&P 9/40 magazines.
• Finished in flat dark earth (FDE).
• The FDE-finished version of Warne’s M&P 9/40 magazine extension line.
• Manufactured by Warne.
• Installs without tools, replacing the factory base pad or floor plate.
• A simple way to add capacity without buying a whole new magazine.
• Keeps the same reliable feeding as the base magazine it’s built for.
• A lightweight add-on that doesn’t require a gunsmith to fit.

Frequently Asked Questions

How many extra rounds does this extension add? It adds 5 rounds of capacity to a compatible magazine.

Does this include a magazine? No, this is an extension only for a compatible M&P 9/40 magazine; the magazine itself is not included.

Buy the Warne 5-Round Magazine Extension for Smith & Wesson M&P 9/40 magazines (FDE)

Order the Warne 5-Round Magazine Extension for Smith & Wesson M&P 9/40 magazines (FDE) from our Lubbock, Texas gun shop for fast shipping. Browse more Magazine Accessories at Schaefer Defense.