Smith & Wesson M&P Shield M2.0 Locking Block - 9mm/.40 - Factory OEM 428580000 Model 590 32 Caliber

32 Caliber

40 S&W M&P trigger bar assemblies

Barrels are also caliber-specific - this

This mainspring comes from a Jerry Miculek edition Model 625

Smith & Wesson M&P Shield M2.0 Locking Block - 9mm/.40 - Factory OEM 428580000 Model 590 32 CaliberSmith & 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