Smith & Wesson N Frame Model 1917 Strain Screw - Square Butt - Used OEM 1917174B mp-9-20-sub Model 60 Chief's Special (

Model 60 Chief's Special (

Designed for N Frame revolvers

Smith & Wesson Model 629 Classic 5" Barrel - Stainless Steel Full Underlug

Component: Center pin (cylinder axis pin)

Smith & Wesson N Frame Model 1917 Strain Screw - Square Butt - Used OEM 1917174B mp-9-20-sub Model 60 Chief's Special (This listing is for the strain screw only. Genuine 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 tensions the mainspring at the bottom of the grip frame, directly affecting trigger pull weight and hammer reliability. Used, original factory part in excellent condition. Part Details: Part Number: 1917174B Frame: N Frame Grip Style: Square