Mud Test: 7.5 FK BRNO

Published on March 21, 2022
Duration: 5:09

This video details a rigorous mud test of the 7.5 FK BRNO polymer frame pistol, firing the potent 7.5 FK cartridge. The expert instructor demonstrates the firearm's performance after complete submersion in mud and subsequent rinsing. The test highlights potential reliability issues in extreme conditions, with the pistol failing to fire or cycle after the mud immersion, though the Holosun optic remains functional.

Quick Summary

The 7.5 FK BRNO pistol, firing the potent 7.5 FK cartridge at approximately 2000 feet per second, failed to operate after a mud immersion test. Despite a Holosun optic remaining functional, the pistol experienced malfunctions including failure to cock and cycle.

Chapters

  1. 00:04Introduction and Pistol Overview
  2. 00:24Pistol's Prior Performance and Optic
  3. 00:46Pre-Mud Firing and Muzzle Protection
  4. 01:18Mud Immersion and Immediate Issues
  5. 02:00Continued Malfunctions Post-Mud
  6. 02:27Water Rinse Attempt and Further Failure
  7. 03:55Test Conclusion and Acknowledgements

Frequently Asked Questions

How did the 7.5 FK BRNO pistol perform in a mud test?

The 7.5 FK BRNO pistol failed to fire or cycle after being completely submerged in mud. Issues included the hammer not staying cocked and the slide failing to return to battery, even after rinsing with water.

Did the optic on the 7.5 FK BRNO pistol survive the mud test?

Yes, the Holosun red dot sight mounted on the 7.5 FK BRNO pistol remained functional throughout the mud immersion and subsequent water rinsing test, demonstrating its durability.

What is the muzzle velocity of the 7.5 FK cartridge?

The 7.5 FK cartridge is capable of propelling an all-copper projectile at approximately 2000 feet per second, contributing to its flat trajectory and long-range effectiveness.

What safety precautions were mentioned during the mud test?

A key safety precaution demonstrated was inserting an earplug into the muzzle to prevent mud from entering the barrel during submersion, a technique suggested for professionals.

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