Smith & Wesson N Frame Model 27 Strain Screw Square Butt Old Style 27173C

Smith & Wesson N Frame Model 27 Strain Screw - Part 27173C

Authentic Smith & Wesson old-style strain screw for N Frame Model 27 and Model 27-2 revolvers with square butt grip frames. This vintage OEM factory part controls mainspring tension, directly affecting trigger pull weight and hammer function for reliable performance.

Key Features

• Vintage OEM Part: Genuine Smith & Wesson factory component manufactured to exact specifications
• Old-Style Design: Period-correct strain screw for classic Model 27 revolvers
• Mainspring Tension Control: Regulates hammer spring pressure for consistent trigger pull and reliable ignition
• Square Butt Configuration: Specifically designed for square butt grip frames
• Used Condition: Functional vintage part showing normal wear consistent with previous use

Compatible Models

This strain screw is designed specifically for Smith & Wesson N Frame revolvers with square butt grip frames:

N Frame Models (Square Butt, Old Style):

• Model 27 - .357 Magnum (square butt variants)
• Model 27-2 - .357 Magnum (square butt variants)
• Other vintage N Frame models with square butt configuration requiring old-style strain screws

Historical Context: The Model 27 was Smith & Wesson's premium .357 Magnum revolver, introduced in 1935 as the Registered Magnum and later designated Model 27 in 1957. This old-style strain screw is correct for vintage production models.

Note: This is an old-style strain screw for square butt models only. Not compatible with round butt models or newer production runs using updated strain screw designs. Verify your revolver's grip frame configuration and production era before ordering.

Installation

Professional gunsmith installation strongly recommended. Disassembly and reassembly of the revolver's internal action required. Some fitting may be necessary by a qualified gunsmith to ensure proper mainspring tension and trigger function.

Specifications

• Part Number: 27173C
• Manufacturer: Smith & Wesson
• Condition: Used
• Frame Type: N Frame
• Grip Frame Type: Square Butt
• Style: Old Style (Vintage)
• Compatible Caliber: .357 Magnum
• Weight: 1 oz

Preserve the authenticity of your vintage Smith & Wesson Model 27 revolver with genuine OEM parts.

Questions? Contact us at sales@usagunsandgear.com or call 770-544-8075 for technical support and compatibility verification.