Will A Pistol Slide Break Your Thumb?

Published on September 17, 2025
Duration: 1:00

This video debunks the myth that a pistol slide will break your thumb. Through practical testing with a Glock 19, it's demonstrated that while uncomfortable, the slide does not cause a break. The primary consequence of improper thumb placement is the firearm failing to cycle correctly, leading to malfunctions.

Quick Summary

A pistol slide will not break your thumb, though it can be uncomfortable and cause malfunctions. Improper thumb placement behind the slide interferes with its cycling, preventing proper operation and requiring the firearm to be cleared.

Chapters

  1. 00:00Introduction: Slide Bite Myth
  2. 00:14Test Setup: Glock 19 & Ammo
  3. 00:24Two-Thumb Slide Bite Test
  4. 00:35Single Thumb Test & Malfunctions
  5. 00:53Conclusion: Slide Won't Break Thumb

Frequently Asked Questions

Can a pistol slide actually break your thumb?

No, a pistol slide is unlikely to break your thumb. While it can cause discomfort and potentially pinch, the primary issue is that improper thumb placement can interfere with the slide's cycling mechanism, leading to firearm malfunctions.

What happens if your thumb is behind the slide when shooting?

If your thumb is positioned behind the slide, it can prevent the slide from cycling properly due to the recoil operation being blocked. This typically results in a failure to feed or eject, causing a malfunction that requires clearing.

What is 'slide bite' in firearms?

'Slide bite' refers to the painful pinching or cutting sensation caused by the moving slide of a semi-automatic pistol making contact with the shooter's hand, often the web between the thumb and index finger.

What firearm and ammunition were used in the Glock 19 slide test?

The test utilized a Glock 19 pistol chambered in 9mm. The ammunition selected for the experiment was 124-grain jacketed hollow point (JHP).

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