Home / Accessory-Magazines / Warne M&P 9/40 MAG EXTENSION FDE 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 Walther Arms MAGAZINE PPQ M2 45ACP 12RD $4900 SIG SAUER MAG SP2022 357SIG/40S&W 10RD $4999 Walther Arms MAGAZINE PPK/S 22LR 10RD $3900