29101 Wolff S&W K, L & N Frame Multi Model Standard Power Rib Mainspring M&P Shield M2.0 Direct Replacement: Drop-in installation

Direct Replacement: Drop-in installation

Genuine OEM Part: Factory Smith & Wesson component (Part #217970000)

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29101 Wolff S&W K, L & N Frame Multi Model Standard Power Rib Mainspring M&P Shield M2.0 Direct Replacement: Drop-in installationPart# 29101 Wolff Precision Gunsprings for Smith & Wesson Revolver Multi Model Standard Power Rib Mainspring Type 1, Pak of 1 K Frame Models: 10, 12, 13, 14, 15, 16, 17, 18, 19, 65, 66, 67, 617, 648 L Frame Models: 581, 586, 681, 686, 696 N Frame Models: 24, 25, 27, 28, 29, 57, 610, 624, 625, 627, 629, 657 Type 1 Factory Standard Power Rib Mainspring only This spring has a unique variable power rib back design. It improves the smoothness and