Smith & Wesson K Frame M&P 1st Model Trigger Spring - Part# MPC7 - .38 Colt - Serial 3312 Firing Pin Lever This spurless (hammerless) hammer assembly

This spurless (hammerless) hammer assembly is designed for double-action-only (DAO) pistols where the hammer does not have an external spur

357 Magnum 7 shot cylinder for 2 1/2" barrel

This is the Old Style version (part JB3007A)

providing additional support for rimfire cartridge rims

Ejector Depressor Plunger Spring

Smith & Wesson K Frame M&P 1st Model Trigger Spring - Part# MPC7 - .38 Colt - Serial 3312 Firing Pin Lever This spurless (hammerless) hammer assemblyAuthentic Smith & Wesson K Frame Trigger Spring Factory OEM Part from Military & Police 1st Model Revolver This is a genuine used trigger spring (Part# MPC7) removed from a Smith & Wesson K Frame Military & Police 1st Model revolver, Serial# 3312. An authentic old style component for collectors and gunsmiths restoring early K Frame revolvers chambered in . 38 Colt. Compatibility & Fitment Frame: Smith & Wesson K Frame Model: Military & Police (M&P)