Smith & Wesson K Frame New Parts - All K Frame Models

Smith & Wesson K Frame Revolver Parts Compatibility Guide

The Smith & Wesson K Frame is one of the most versatile and widely-used revolver platforms in history. Understanding parts compatibility across K Frame models ensures you select the correct OEM components for reliable performance.

K Frame Model Compatibility:

K Frame parts typically interchange across popular models including the Model 10, 12, 13, 14, 15, 16, 17, 18, 19, 48, 53, 64, 65, 66, and 67. However, always verify specific part numbers for your exact model and production year.

Key Compatibility Considerations:

Barrel Length Variations - K Frames were produced in 2", 2.5", 3", 4", 5", 6", and 8-3/8" barrel lengths. Barrel-specific parts (front sights, ejector rods, ejector rod shrouds) must match your barrel configuration.

Caliber Differences - While frame dimensions are consistent, internal parts may vary between .22 LR, .32 S&W Long, .38 Special, and .357 Magnum chamberings. Firing pins, hammers, and cylinder components are often caliber-specific.

Round vs. Square Butt - K Frames came with both round and square butt configurations. Grip frames, mainsprings, and grip panels are NOT interchangeable between these variants.

Pre-Lock vs. Internal Lock Models - Post-2001 models with the internal lock mechanism have different sideplate and frame specifications. Sideplates and related components are generation-specific.

Universally Compatible K Frame Parts:

Triggers, trigger return springs, cylinder stops, hand assemblies, extractors, extractor rods (length-matched), rebound slides, stirrups, sears, hammer nose bushings, and most screws interchange across standard K Frame models.

Always Verify Before Installing:

Check your model number, production date, and existing part numbers. OEM Smith & Wesson parts ensure proper fit, function, and safety. When in doubt, consult a qualified gunsmith.