Quick Tip: Parts Compatibility Between S&W M&P Pistol Models

Published on November 5, 2019
Duration: 2:46

This guide details parts compatibility for Smith & Wesson M&P pistol variants, including the M&P, M&P Shield, and their 2.0 counterparts. Expert instructor Caleb from Brownells explains which components, such as strikers, sights, barrels, recoil springs, and magazines, are interchangeable and highlights critical differences in trigger kits, extractors, slide catches, and sear plungers based on generation and caliber. Proper identification of your firearm's specific model and production year is crucial for successful aftermarket part installation.

Quick Summary

The only parts universally interchangeable across all Smith & Wesson M&P handgun variants are the striker and the striker safety. Magazines are interchangeable between standard M&P and M&P 2.0 models. However, components like sights, barrels, extractors, and slide catches have specific compatibility rules based on model and generation.

Chapters

  1. 00:05M&P Compatibility Introduction
  2. 00:14Universal Interchangeable Parts
  3. 00:22Sight Compatibility Rules
  4. 00:30Dovetail Differences Explained
  5. 00:38Shield Barrel Compatibility
  6. 00:49Full-size/Compact Barrel Compatibility
  7. 01:00Recoil Spring Compatibility
  8. 01:04Safety Lever Options
  9. 01:17Magazine Interchangeability
  10. 01:23Trigger Kit Generation Specifics
  11. 01:32Caliber-Specific Trigger Parts
  12. 01:52Extractor and Slide Catch Differences
  13. 02:03Pre-2010 M&P Trigger Kits
  14. 02:22Current Sear Plunger Standards
  15. 02:30Conclusion

Frequently Asked Questions

What parts are interchangeable across all Smith & Wesson M&P pistol models?

The only parts that are universally interchangeable across all Smith & Wesson M&P handgun variants, including the M&P, M&P Shield, and 2.0 models, are the striker and the striker safety. All other components have specific compatibility requirements.

Can I swap magazines between my Smith & Wesson M&P and M&P 2.0 pistols?

Yes, magazines are interchangeable between the standard Smith & Wesson M&P models and their respective M&P 2.0 variants. You can swap magazines back and forth between these generations without issue.

Are S&W M&P Shield sights compatible with full-size M&P pistols?

While the dovetail cuts on the Shield and full-size M&P pistols are the same, Shield sights are narrower because the slide is more narrow. Therefore, Shield sights are not directly interchangeable with full-size M&P slides without modification, though full-size sights may fit a Shield slide if they are narrow enough.

What is the difference in sear plungers between older and newer S&W M&P models?

Original Smith & Wesson M&P pistols manufactured before 2010 use a 1/16th inch sear plunger. Post-2010 models and all current production M&P firearms utilize a 1/8th inch sear plunger. This difference is critical when installing aftermarket trigger kits.

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