Glock 20 (10mm) with KKM 6 inch barrel

Published on December 19, 2011
Duration: 4:06

This guide details the process of swapping a factory barrel for a KKM Precision 6-inch barrel on a Glock 20C, followed by comparative shooting tests. It includes observations on point-of-aim shifts, recoil reduction with compensated slides, and terminal ballistics comparisons between 10mm and .40 S&W. The video demonstrates experienced firearm handling and technical analysis.

Quick Summary

The Glock 20C, equipped with a KKM Precision 6-inch barrel, was tested for performance. A longer barrel aims to increase 10mm velocity, while the compensated slide reduces muzzle flip. Terminal ballistics tests showed 10mm significantly outperforming .40 S&W in penetration and wound channel size.

Chapters

  1. 00:00Intro Glock 20C & 10mm
  2. 00:20KKM 6-inch Barrel Install
  3. 00:41Shooting Test & POA Shift
  4. 01:3510mm vs .40 S&W Recoil
  5. 01:57Terminal Ballistics Tests

Frequently Asked Questions

What are the benefits of a 6-inch barrel on a Glock 20C?

A 6-inch barrel, like the KKM Precision model, is primarily intended to increase the muzzle velocity of the 10mm cartridge due to a longer burn time for the gunpowder, potentially enhancing its terminal performance and range.

How does the 10mm cartridge compare to the .40 S&W in terms of performance?

The 10mm is a larger and more powerful cartridge than the .40 S&W. Tests show 10mm FMJ ammunition creates significantly larger exit holes and demonstrates greater penetration power in materials like wood compared to .40 S&W.

Can changing the barrel affect a pistol's point of aim?

Yes, installing an aftermarket barrel, especially one with a different length or manufacturing tolerance, can alter the firearm's point of aim (POA) and point of impact (POI). This often requires re-zeroing or adjusting sights.

What is the effect of a compensated slide on recoil?

A compensated slide features ports that redirect gas upwards during firing. This action effectively counteracts muzzle flip, making it easier to manage recoil and maintain a stable sight picture for follow-up shots.

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