Smith & Wesson N Frame Model 1917 Strain Screw Square Butt .45 ACP — Used Part 1917174B trigger return The cylinder stop is a

The cylinder stop is a critical timing component that locks the cylinder in proper alignment with the barrel for safe firing

Complete cylinder assembly with yoke included

Firearms history enthusiasts

Smith & Wesson K Frame Model 64 (All Variants) Trigger Assembly —

Smith & Wesson N Frame Model 1917 Strain Screw Square Butt .45 ACP — Used Part 1917174B trigger return The cylinder stop is aSmith & Wesson N Frame Model 1917 Strain Screw Square Butt, Used OEM Part Genuine used Smith & Wesson OEM strain screw for the N Frame Model 1917 revolver chambered in . 45 ACP (D. A. . 45). Square butt grip frame configuration. The strain screw threads into the bottom of the grip frame and tensions the mainspring, directly affecting trigger pull weight and hammer fall force. A rare and hard to find original factory part for this historic pre model