Accuracy in the Mk12? A brand new Mk12 Mod0 upper from PRI.

Published on March 9, 2021
Duration: 8:43

This video provides an expert re-evaluation of the Mk12 Mod0's accuracy using a new Precision Reflex Inc. (PRI) upper receiver. The analysis, conducted by 9-Hole Reviews, focuses on 9-shot group testing at 100 yards with various match ammunition, including IMI 77gr and Mk262. The data highlights the significant impact of suppressors on group consistency and confirms the Mk12's effectiveness as a Designated Marksman Rifle (DMR) out to 800 yards.

Quick Summary

Expert analysis of the Mk12 Mod0's accuracy with a new PRI upper reveals its capability as a DMR. Using 9-shot groups at 100 yards, tests with Mk262 and IMI 77gr ammunition showed significant accuracy improvements (up to 33% tighter groups) when suppressed with an AEM5 suppressor.

Chapters

  1. 00:34Introduction: Mk12 Accuracy Re-test
  2. 01:11Rationale for New Upper
  3. 02:34Live Fire Testing
  4. 03:03IMI 77gr Match Analysis
  5. 04:07Military Mk262 Performance
  6. 05:259-Shot vs. 5-Shot Groups
  7. 06:14System Conclusion

Frequently Asked Questions

What is the typical accuracy of a Mk12 Mod0 rifle?

Based on testing with a new PRI upper, the Mk12 Mod0 demonstrated capable accuracy, with 9-shot groups at 100 yards showing performance improvements when suppressed. While not a benchrest rifle, it's effective as a DMR out to 800 yards.

How does suppressor use affect Mk12 Mod0 accuracy?

Suppressing the Mk12 Mod0, specifically with an AEM5 suppressor, significantly enhances accuracy. Tests showed group size reductions of up to 33% and improved shot-to-shot consistency, confirming its value for precision.

What ammunition was used to test the Mk12 Mod0 accuracy?

The Mk12 Mod0 was tested with various match-grade 5.56mm loads, including IMI 77gr Match (Razor Core) and military-spec Mk262 ammunition, to evaluate system performance under different conditions.

Why does 9-Hole Reviews use 9-shot groups for accuracy testing?

9-Hole Reviews utilizes 9-shot groups because they provide a more statistically significant and representative measure of a firearm system's true accuracy potential compared to smaller 3 or 5-shot groups, reducing the impact of outliers.

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