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65938 Smith & Wesson Model 659 Main Spring & Bushing Used Part 9MM Stainless Steel
640 Magnum
This set includes both the cylinder stop and its spring — everything needed for a complete replacement
Reliable operation: Correct geometry and spring tension for safe hammer lowering
Direct replacement for worn components
S&W M&P 9/40 Sear Housing Block Mag Safety | OEM 421970000 1006 65938 Smith & Wesson ModelSmith & Wesson OEM Sear Housing Block Assembly for M&P 9 40 Pistols with Magazine Safety This factory sear housing block assembly with integrated magazine safety is a critical fire control component for M&P9 and M&P40 pistols equipped with magazine disconnect safety. Genuine S&W quality ensures proper fit, reliable function, and safe operation. Genuine S&W Part: Factory OEM component (Part #421970000) Multi Caliber Fit: Compatible with M&P 9mm and .
