S&W N Frame Rear Adjustable Sight Body Models 24, 25, 29, 57, 629, 657 – Part# Nkit162
Smith & Wesson N Frame Rear Adjustable Sight Body – Used
Part# N162 | Old Style Square Front Tang | Tang Width: 2.09"
This is a used rear adjustable sight body only — no blade, elevation screw, windage screw, or stud included. Parts are needed to complete a rebuild. Inspect the photo carefully and verify the 2.09" tang measurement matches your firearm before ordering.
Compatible Models
- Model 24 (N Frame)
- Model 25 (N Frame)
- Model 29 (N Frame)
- Model 57 (N Frame)
- Model 629 (N Frame – stainless)
- Model 657 (N Frame – stainless)
Old style square front tang design. Not compatible with newer pinned or round-tang sight bodies.
Parts Needed to Rebuild This Sight
This sight body requires the following additional parts to complete a rebuild:
- Elevation Stud: Smith & Wesson Rear Sight Elevation Stud – K, L, N, X Frame – 071800000
-
Blade Kit (choose one):
- K/L/N Frame Rear Sight Blade Kit – .160" Black – 191490000
- K/L/N/X Frame Rear Sight Blade Kit – .160" White Outline – 191480000
- K/L/N/X Frame Rear Sight Blade Kit – .146" Black – 191450000
- K/L/N Frame Rear Sight Blade Kit – .146" White Outline – 191440000
- K/L/N/X Frame Rear Sight Blade Kit – .126" Black – 191470000
- K/L/N/X Frame Rear Sight Blade Kit – .126" White Outline – 191460000
Part Details
- OEM Smith & Wesson factory part
- Condition: Used – sight body only, no blade or hardware
- Frame Size: N Frame
- Tang Width: 2.09" (See Pictures)
- Finish: Blue Steel
- Style: Old Style Square Front Tang
Old S&W Sight Chart – N Frame Models
Use the chart below to determine which blade height is correct for your N Frame model and barrel length:
| Model | Caliber | Barrel Length | Blade Height |
|---|---|---|---|
| 25 | .45 ACP / .45 Colt | 6 1/2" | .146" |
| 25-5 | .45 Colt | 4", 6" & 8 3/8" | .126" |
| 27 | .357 Magnum | 3 1/2" & 5" | .126" |
| 27 | .357 Magnum | 6" & 6 1/2" | .146" |
| 27 | .357 Magnum | 8 3/4" | .160" |
| 28 | .357 Magnum | 4" & 6" | .136" |
| 29 | .44 Magnum | 4" & 6 1/2" | .146" |
| 29 | .44 Magnum | 8 3/8" | .160" |
| 57 | .41 Magnum | 4" & 6 1/2" | .146" |
| 57 | .41 Magnum | 8 3/8" | .160" |
| 629 | .44 Magnum | 4" & 6" | .146" |
| 629 | .44 Magnum | 8 3/8" | .160" |
| 657 | .41 Magnum | 4" & 6 1/2" | .146" |
| 657 | .41 Magnum | 8 3/8" | .160" |
Installation Note
Disassembly and reassembly required. Installation and fitting by a qualified gunsmith is recommended. Factory replacement parts are manufactured to original S&W specifications and tolerances.
How to Find Your Model Number
Swing out the cylinder and check behind the yoke on the frame. Model numbers were introduced in 1957–58. If no model number is present, your revolver may pre-date 1957. Contact us with your serial number and we can help identify the correct part.
USA Guns And Gear stocks used, new, and new-old-stock Smith & Wesson double-action revolver parts. Email or call us for all your S&W parts needs.