Upgrading Your Glock 19...10 HUGE Mistakes to Avoid

Published on May 13, 2021
Duration: 25:34

This video details common mistakes when building custom Glocks, emphasizing the importance of avoiding generational part mixing and tolerance stacking. It advises starting with basic components, using quality internals, and performing a proper break-in period. The content also covers specific pitfalls in Polymer80 builds and the necessity of matching ported barrels with appropriate slides.

Quick Summary

Avoid common Glock 19 build mistakes like mixing generations or tolerance stacking. Start simple, use quality OEM or reputable aftermarket internals, and perform a 100-150 round break-in with proper lubrication for reliability.

Chapters

  1. 00:00Introduction to Glock Building
  2. 01:24Mistake 1: Overcomplicating the Build
  3. 03:40Mistake 2: Mixing Generations
  4. 08:13Mistake 3: Tolerance Stacking
  5. 11:32Mistake 4: Low-Quality Internals
  6. 14:56Mistake 5: Improper Break-in
  7. 17:17Mistake 6: Magazine Compatibility
  8. 18:20Mistake 7: Polymer80 Build Order
  9. 19:07Mistake 8: Dust Cover Clearance
  10. 21:09Mistake 9: Ported Barrel/Slide Mismatch
  11. 22:25Pre-built Alternatives

Frequently Asked Questions

What is tolerance stacking in Glock builds?

Tolerance stacking is when individually 'in-spec' aftermarket parts, when combined, create a firearm that doesn't function correctly due to cumulative small variations. This is a common issue in custom Glock builds, especially affecting the slide-to-frame fit.

Why should I avoid mixing Glock generations when building?

Glock parts are often generation-specific (Gen 3, Gen 4, Gen 5). Mixing them can cause incompatibility issues with slide dimensions, recoil spring assemblies, firing pins, and trigger housings, potentially leading to malfunctions.

What are the best quality internal parts for a custom Glock build?

For reliability, OEM Glock internals are the gold standard. If using aftermarket, opt for reputable brands like Polymer80, Shadow Systems, or JSD Supply. Avoid cheap, unbranded parts, especially those from overseas.

How long is the break-in period for a new custom Glock build?

A new custom Glock build typically requires a break-in period of 100 to 150 rounds. Using high-quality factory ammunition and generous lubrication during this period helps the parts wear in smoothly.

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