S&W K Frame M&P 1st Model 4-Screw Trigger Lever .38 Colt – Part# MPC8

Smith & Wesson K Frame Military & Police 1st Model Trigger Lever – 4-Screw, Old Style

A rare factory-original trigger lever for the earliest production K Frame revolvers. This part was sourced from a Military & Police 1st Model revolver (Serial# 3312) chambered in .38 Colt — one of the earliest S&W hand ejector revolvers ever produced. The trigger lever (also called the trigger/hand lever or stirrup) is the internal linkage component that connects the trigger to the hand, transferring trigger movement into cylinder rotation — a worn or damaged lever causes erratic cylinder indexing or failure to rotate. Correct-era parts for these early 4-screw revolvers are extremely difficult to find.

• Part Number: MPC8
• Fits: Smith & Wesson K Frame Military & Police 1st Model (4-Screw)
• Caliber: .38 Colt
• Part Type: Trigger Lever (Trigger/Hand Lever)
• Era: 4-Screw, Old Style
• Finish: Blue Steel
• Provenance: Sourced from Serial# 3312
• Condition: Used (factory original)
• Installation: Professional gunsmith fitting required – trigger lever timing is critical for reliable cylinder rotation

Factory Replacement Quality

Genuine Smith & Wesson factory part from the correct production era — same dimensions, same engagement geometry, same reliable trigger-to-cylinder linkage. Correct-era parts for these early revolvers are increasingly scarce.

About the M&P 1st Model

The Military & Police 1st Model (introduced circa 1899) was one of the first S&W swing-out cylinder revolvers and the direct ancestor of the legendary Model 10. Early production revolvers like Serial# 3312 predate the model number system by decades — if you're unsure whether this part fits your specific revolver, contact us with your serial number and we'll help confirm compatibility.

Questions? Call or email us — we're happy to help you get the right part the first time.