This trigger return spring, part number 391420000, is designed for use with a variety of Smith and Wesson auto pistols, including the M&P 9, M&P 9 Compact, M&P 9 Shield, M&P 40, M&P 40 Compact, M&P Shield 40, M&P 10mm M2.0, M&P 45, M&P 45 Compact, M&P Shield 45M2.0, SD9 VE, and SD40 VE models. It is a reliable and essential component for optimal performance.
Features: Smith & Wesson factory part.
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 original parts