Smith & Wesson Pistol M&P 9 Shield Locking Block 9mm MP9B1 fire control allowing it to swing out

allowing it to swing out for loading

Locks cylinder in proper alignment for safe firing

Angled Design: Optimized striker geometry for M2

Safety lock plunger pin

Direct drop-in fit for the listed model

Smith & Wesson Pistol M&P 9 Shield Locking Block 9mm MP9B1 fire control allowing it to swing outSmith & Wesson M&P 9 Shield Locking Block for 9mm Used Component MP9B1 Please call or email if you have any questions. Gunsmiths Required: Disassembly and Assembly required to replace part Some parts may require installation and fitting by a qualified gun smith Factory replacement parts are manufactured to the exact same specifications and tolerances and use the same manufacturing materials as the original parts