The Apex Mass Driver Hammer improves ignition of .22LR ammunition by increasing the mass behind the hammer’s impact surface, allowing for a lighter double action trigger pull than the factory’s stock hammer. The Apex Mass Driver Hammer, with sear, stirrup, and spring, replaces Smith & Wesson factory MIM components to ensure consistent performance. Improves ignition of .22LR ammunition Allows for reduced hammer fall weight and trigger pull weight Converts revolver to Double Action Only (DAO), lacks a hammer spur for cocking. Works in current production S&W Model 617(-4 and later) L-Frame .22 rimfire revolvers only. Mfg: Apex Tactical Specialties Inc SPECS: Contents: Apex Mass Driver Hammer (fully assembled with the following: Apex fully machined revolver sear, Apex sear spring, Stirrup and pins), Rebound Slide Spring(0.165" silver), Rebound Slide Spring(0.160" red)
