Smith & Wesson M&P Shield M2.0 Locking Block - 9mm/.40 - Factory OEM 428580000 Model 590 This mainspring comes from a

This mainspring comes from a Jerry Miculek edition Model 625

The bright white dot insert provides exceptional visibility in all lighting conditions

32 Caliber

Smith & Wesson Model 5903 Trigger - Part# 976

Smith & Wesson M&P Shield M2.0 Locking Block - 9mm/.40 - Factory OEM 428580000 Model 590 This mainspring comes from aSmith & Wesson M&P Shield M2. 0 Locking Block Factory OEM Part #428580000 Genuine Smith & Wesson factory locking block designed for M&P Shield M2. 0 pistols in 9mm and . 40 S&W calibers. Key Features: Factory OEM quality and precision Precision machined for reliable function Direct replacement locking block Essential component for slide operation Factory specifications and tolerances Compatibility: Compatible with: M&P Shield 9mm M2. 0 M&P Shield . 40