Home / Accessory-Magazines / Warne M&P 9/40 MAG EXTENSION FDE View cart “FN MAGAZINE FN 509M 9MM 10RD” has been added to your cart. Sale! Warne M&P 9/40 MAG EXTENSION FDE$5499 Original price was: $5499.$5237Current price is: $5237. In stock Warne M&P 9/40 MAG EXTENSION FDE quantity Add to cart SKU: MESW-5/4DE Category: Accessory-Magazines Product ID: 25955 Description Description +5 9MM | +4 .40 Mag Extension6061 T6 Aluminum BilletType 2 Anodized Finish Related products Springfield Armory MAGAZINE XD 40SW 12RD SERV/TAC $3099 Sale! ProMag PROMAG SIG P226 9MM 50RD DRUM $11499 Original price was: $11499.$8916Current price is: $8916. Ruger 77/17 MAGAZINE 17WSM BLK 6RD $3795 Springfield Armory MAGAZINE XD-S 40SW 6RD $3099