Warne M&P 9/40 Magazine Extension FDE – +5/+4 Round Capacity

The Warne M&P 9/40 Magazine Extension increases capacity on Smith & Wesson M&P 9mm and .40 S&W magazines. This extension adds 5 rounds to 9mm magazines and 4 rounds to .40 S&W magazines, providing extra capacity without compromising reliability. Finished in Flat Dark Earth (FDE) for a subdued, professional appearance that coordinates with FDE-framed pistols.

Constructed from durable polymer with an internal steel spring retention system. Installation requires a replacement spring (not included). Compatible with factory Smith & Wesson M&P full-size magazines. Maintains flush fit at the base of the extension for a clean look and stable grip on extended magazines.

• Type: Magazine base pad extension
• Compatible Firearms: Smith & Wesson M&P 9mm and .40 S&W
• Capacity Increase: +5 rounds (9mm) / +4 rounds (.40 S&W)
• Material: Polymer body with steel retention components
• Finish: Flat Dark Earth (FDE)
• Includes: Extension base pad only (replacement spring required, sold separately)
• Use: Competition shooting, duty carry, or extended range sessions where increased capacity is desired