XTech Tactical FPC & M&P9 Compact 22 Round Magazine Extender Black 22. It includes the MTX extension offering the reliability and performance needed for tactical and duty use. A sleeve is included for compatibility with both platforms. Specifications for XTech Tactical FPC & M&P9 Compact 22 Round Magazine Extender: Manufacturer: XTech Tactical Gun Make: Smith & Wesson Gun Model: Smith & Wesson M&P Compact Magazine Capacity: 22 Round Color: Black Features of XTech Tactical FPC & M&P9 Compact 22 Round Magazine Extender 22-round Magazine for FPC & M&P9 Compact Custom-engineered spring Includes sleeve for seamless integration Package Contents: XTech Tactical FPC & M&P9 Compact 22 Round Magazine Extender What firearm models does the manufacturer say XTech Tactical FPC & M&P9 Compact 22 Round Magazine Extender is compatible with? The manufacturer suggests that XTech Tactical FPC & M&P9 Compact 22 Round Magazine Extender is compatible with Smith & Wesson M&P CompactXTech Tactical XTT140-FPC-EXT-MAG: FPC & M&P9 Compact 22 Round Magazine Extender Black 22