Smith & Wesson OEM factory new lever housing block for M&P pistols, compatible with M&P 9, M&P 9 Compact, M&P 40, and M&P 40 Compact models, featuring magazine safety.
Part# 421970000
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Features: Smith & Wesson Factory New 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