Smith & Wesson K Frame Model 66-2 .357 Magnum Trigger .310" Wide Spur Smooth Stainless - Part# 66185B J60107A Not sure if this spring

Not sure if this spring fits your pistol

as there are two different styles

Complete Your Sight

S&W Model 28 (over 3" barrel)

and the N Frame is the large frame designed for magnum cartridges

Smith & Wesson K Frame Model 66-2 .357 Magnum Trigger .310" Wide Spur Smooth Stainless - Part# 66185B J60107A Not sure if this springSmith & Wesson K Frame Trigger . 310" Wide Spur Smooth OEM Smith & Wesson replacement trigger for the K Frame Model 66 2 revolver chambered in . 357 Magnum. This is a stainless steel, old style smooth spur trigger measuring . 310" wide. Part Details Part Number: 66185B Material: Stainless Steel Trigger Width: . 310" Spur Style: Smooth (no serrations) Condition: Used OEM factory part Style: Old Style Compatible Models This trigger is compatible with