Supersonic VS Subsonic

Published on April 24, 2024
Duration: 0:19

This video compares supersonic and subsonic 9mm ammunition through a suppressed SIG MPX. Supersonic rounds produce a distinct 'crack' due to breaking the sound barrier, even with a suppressor. Subsonic rounds are significantly quieter, with only mechanical action and impact sounds audible. The SIG MPX is highlighted with its technical specifications.

Quick Summary

Supersonic 9mm ammunition produces a distinct 'crack' when fired, even suppressed, due to breaking the sound barrier. Subsonic 9mm ammo is significantly quieter, with only mechanical actions and impact sounds audible, making it ideal for suppressed use.

Chapters

  1. 00:00Supersonic Ammo Demo
  2. 00:08Subsonic Ammo Demo

Frequently Asked Questions

What is the main difference between supersonic and subsonic 9mm ammunition when fired suppressed?

Supersonic 9mm ammo still creates a 'crack' sound as it breaks the sound barrier, even with a suppressor. Subsonic ammo is quieter, primarily producing the sounds of the firearm's action and bullet impact.

Does a suppressor eliminate the sound of supersonic 9mm ammunition?

No, a suppressor significantly reduces the overall noise but cannot eliminate the sonic boom created by supersonic projectiles exceeding the speed of sound.

What firearm was used to demonstrate the difference between supersonic and subsonic 9mm ammo?

The demonstration used a SIG MPX pistol caliber carbine equipped with a suppressor and a Holosun red dot sight.

What are the key specifications of the SIG MPX shown in the video?

The SIG MPX featured is chambered in 9mm, has a 4.5-inch barrel, 30-round capacity, weighs 5.0 lbs, and has an MSRP of $2,100.

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