This striker block spring is designed for Smith & Wesson M&P auto pistols, compatible with M&P 9, M&P 9 Compact, M&P Shield 9, M&P 40, M&P 40 Compact, M&P Shield 40, M&P 45, M&P 45 Compact, M&P Shield 45, and M2.0 models, ensuring reliable striker function.
Part# 392080000