Smith & Wesson Model 28 Highway Patrolman Internal Parts Kit - Factory OEM .357 Magnum

Smith & Wesson Model 28 Highway Patrolman Internal Parts Kit

Part Number: 28171A | Caliber: .357 Magnum | Condition: Used Factory OEM | Frame: N-Frame

Complete 7-Piece Internal Mechanism Assembly

This authentic Smith & Wesson internal parts kit provides everything needed to restore or repair the critical action components of your Model 28 Highway Patrolman revolver. Each component is genuine factory OEM, ensuring precise fit and reliable function.

What's Included

• Hammer Block – Safety mechanism that prevents firing pin contact unless trigger is fully depressed
• Rebound Slide & Spring – Returns trigger to forward position after each shot
• Cylinder Stop & Spring – Locks cylinder in battery for consistent timing
• Bolt Plunger & Spring – Engages cylinder notches for secure lockup
• Trigger Stop Pin – Old-style vintage configuration for period-correct restoration

Compatibility Scope

Confirmed Compatible Models:

• Smith & Wesson Model 28 Highway Patrolman (.357 Magnum)
• N-Frame revolvers chambered in .357 Magnum with similar internal geometry
• Vintage production runs using old-style trigger stop pin configuration

Frame Type: N-Frame (Large Frame)
Caliber: .357 Magnum
Generation: Vintage/Classic production
Finish: Black steel components

Note: While these parts are designed for the Model 28, some components may be compatible with other N-Frame .357 Magnum revolvers. We recommend verification with a qualified gunsmith before installation to ensure proper fit and function for your specific serial number range.

Key Differentiators

• Factory OEM Components – Authentic Smith & Wesson parts, not aftermarket reproductions
• Complete Kit – All seven critical internal action parts in one package
• Vintage Configuration – Old-style trigger stop pin for period-correct restorations
• Pre-Inspected – Used parts evaluated for serviceability
• Hard-to-Find – Discontinued components for classic revolvers

Target Customer

This parts kit is ideal for:

• Gunsmiths & Armorers – Professional repair and restoration specialists
• Collectors – Enthusiasts restoring vintage Model 28 revolvers to factory specification
• Competitive Shooters – Revolver competitors maintaining backup firearms
• Law Enforcement Armorers – Agencies maintaining legacy duty weapons
• DIY Enthusiasts – Experienced owners comfortable with revolver disassembly

Current Pain Point This Solves

The Smith & Wesson Model 28 Highway Patrolman was discontinued decades ago, making factory replacement parts increasingly scarce. When internal action components wear or break, owners face three frustrating options: expensive custom machining, unreliable aftermarket substitutes, or retiring a cherished firearm. This complete OEM parts kit solves that problem by providing authentic factory components that restore proper function and maintain collector value.

Common issues this kit addresses:

• Worn or broken rebound slide causing trigger return failure
• Cylinder timing issues from damaged cylinder stop
• Hammer block wear affecting drop safety
• Weak or broken springs causing light primer strikes
• Missing trigger stop pin from previous repairs

Installation & Technical Notes

⚠️ Professional Installation Recommended

These internal action parts require complete disassembly of the revolver's lockwork. Installation should only be performed by qualified gunsmiths or experienced individuals with proper tools, knowledge, and understanding of revolver timing and function. Improper installation can result in unsafe operation.

Required Skills: Advanced
Tools Needed: Gunsmith screwdriver set, punches, slave pins, action testing tools
Estimated Time: 1-2 hours for experienced technicians

Specifications

Why Choose USA Guns And Gear?

We specialize in authentic Smith & Wesson pistol and revolver parts, focusing on factory OEM components for third-generation and classic models. Every part is carefully sourced and inspected to ensure you receive genuine S&W quality. Our expertise in discontinued and hard-to-find components means you can trust the authenticity and compatibility of every purchase.

Questions about compatibility? Contact us before ordering – we're here to help ensure you get the right parts for your specific revolver.

Note: This is a used factory part. While inspected for serviceability, some wear consistent with previous use may be present. Factory replacement parts are manufactured to exact specifications and tolerances using the same materials as original production components.