Glock 18 & 18C Machine Pistols: How Do They Work?

Published on March 3, 2025
Duration: 0:56

The Glock 18 and 18C are select-fire machine pistols with a unique selector switch for semi-automatic or full-automatic fire. The 18C incorporates a ported barrel and lightened slide to mitigate muzzle flip and improve controllability during automatic fire. Understanding the internal mechanism, particularly how the slide interacts with the sear in full-auto mode, is key to its operation.

Quick Summary

The Glock 18C improves full-auto controllability with a lightened slide to reduce reciprocating mass and a ported barrel with slide cutouts. These redirect gas upwards, minimizing muzzle flip and climb during sustained fire.

Chapters

  1. 00:00Introduction: Glock 18 & 18C
  2. 00:0718C Controllability Features
  3. 00:29Selector Switch Explained
  4. 00:33Full Auto Internal Mechanism

Frequently Asked Questions

How does the Glock 18C improve controllability in full-auto fire?

The Glock 18C uses a lightened slide to reduce reciprocating mass and a ported barrel with slide cutouts. These features redirect gas upwards, effectively counteracting muzzle flip and climb during automatic fire.

What are the settings on the Glock 18 selector switch?

The selector switch on the Glock 18 and 18C has two positions indicated by dots. One dot signifies semi-automatic fire, while two dots engage the full-automatic firing mode.

How does the Glock 18 function in full-automatic mode?

In full-auto, a finger on the slide engages a tab in the frame. This mechanism repeatedly releases the sear as long as the trigger is held, enabling continuous firing.

What distinguishes the Glock 18C from the standard Glock 18?

The primary distinction is the 18C's enhanced controllability features: a lightened slide and a ported barrel with corresponding slide ports designed to reduce muzzle flip during automatic fire.

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