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MP5 vs MP5K vs MP5SD

BurstReview
Published on June 28, 2025
Category: Tactical & Gear
Duration: 2:58

This video compares the sound suppression effectiveness of the MP5, MP5K, and the integrally suppressed MP5 SD when firing various ammunition types. It highlights how the MP5 SD with its integral suppressor is substantially quieter, especially with subsonic ammunition, compared to the other two models even when suppressed. The MP5 SD effectively mitigates the supersonic crack.

Tags

MP5
MP5K
MP5 SD
PTR 9CT
High-Tech Arms MP5 SD Clone
RS9 Suppressor
SilencerCo Hybrid 46M
115 Grain Ammunition
124 Grain Ammunition
158 Grain Subsonic Ammunition
Suppressor Host Comparison
Integral Suppressor
Bolt Action
Blowback

Quick Summary

The MP5 SD is the quietest suppressor host among the MP5, MP5K, and MP5 SD. Its integral suppressor design effectively eliminates the supersonic crack, making it substantially quieter than the other models, especially when compared with subsonic ammunition.

Chapters

  1. 00:00Introduction: Quietest Suppressor Host?
  2. 00:10Loading with 115 Grain Ammunition
  3. 00:20Testing Regular MP5 with 115 Grain
  4. 00:45Testing MP5K with 115 Grain
  5. 01:02Testing MP5 SD with 115 Grain
  6. 01:22Testing with 124 Grain Ammunition
  7. 01:24Testing PTRP5 with 124 Grain
  8. 01:44Testing MP5K with RS9 Suppressor (124 Grain)
  9. 02:03Testing High-Tech Arms MP5 SD Clone
  10. 02:18Testing with 158 Grain Subsonic Ammunition
  11. 02:25Testing PTR9CT with Subsonic Ammo & Hybrid 46M
  12. 02:43Testing MP5K with Subsonic Ammo & RS9 Suppressor

Frequently Asked Questions

Which firearm is the quietest suppressor host among the MP5, MP5K, and MP5 SD?

The MP5 SD, featuring an integral suppressor, is demonstrably the quietest suppressor host. It significantly reduces noise, especially the supersonic crack, making it substantially quieter than the standard MP5 and MP5K, even when those are equipped with external suppressors.

How does ammunition type affect suppressor performance on an MP5 platform?

Ammunition type is critical. Standard supersonic rounds (like 115 or 124 grain) will always produce a crack, even when suppressed. However, using subsonic ammunition (like 158 grain) with a suppressor on an MP5 or MP5K dramatically reduces the noise, bringing it closer to the sound level of an integrally suppressed MP5 SD.

What is the difference in sound between a suppressed MP5K and an MP5 SD?

The MP5 SD with its integral suppressor is substantially quieter than a suppressed MP5K. While the MP5K can be made quieter with a good suppressor and subsonic ammunition, the MP5 SD's integrated design inherently offers superior sound reduction, effectively eliminating the supersonic crack.

What suppressors were used in the MP5 vs MP5K vs MP5 SD comparison?

The MP5K was tested with an RS9 suppressor from RS Suppressors. The standard MP5 (specifically a PTR 9CT variant) was tested with a SilencerCo Hybrid 46M suppressor. The MP5 SD features an integral suppressor built into the firearm.

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