MPMC Smith & Wesson Pistol M&P 40S&W 357Sig 15 Round Magazine Used Pre-Model K22 Start with the heaviest spring

Start with the heaviest spring (16 LB) and work your way down to find the optimal balance between light trigger pull and reliable ignition:

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K876 Smith & Wesson Used K Frame Model 16 Thumb Piece & Nut

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MPMC Smith & Wesson Pistol M&P 40S&W 357Sig 15 Round Magazine Used Pre-Model K22 Start with the heaviest springPart# MPMC Smith & Wesson Pistol M&P 40S&W 357Sig 15 Round Magazine Used Email us sales@usagunsandgear. com or call us 770 544 8075 for your Smith and Wesson gun part needs Gunsmiths Required: Disassembly and Assembly required to replace part. Some parts may require installation and fitting by a qualified gun smith Factory replacement parts are manufactured to the exact same specifications and tolerances and use the same manufacturing materials as the