Bravo Company USA AR-15 KeyMod Rail Covers Heat Test (HD)

Published on November 2, 2015
Duration: 4:29

This video by Mrgunsngear demonstrates a heat test on Bravo Company USA's KeyMod Rail Covers for the AR-15 platform. The test involves firing 100 rounds of 5.56mm ammunition through a rifle equipped with the covers, monitoring temperatures with an IR thermometer. The results show the covers significantly reduce heat transfer to the hand, making them a valuable accessory for shooters engaging in rapid fire.

Quick Summary

BCM KeyMod Rail Covers effectively reduce heat transfer on AR-15 handguards during rapid fire. After 100 rounds, the covers maintained temperatures between 130-178°F, allowing for comfortable handling, while the bare barrel reached 299-428°F. This makes them a valuable accessory for shooters experiencing heat issues.

Chapters

  1. 00:20Introduction to BCM KeyMod Rail Covers
  2. 00:53Initial Temperature Readings
  3. 01:16Test Firearm and Accessories Setup
  4. 01:40Firing Sequence - First Magazine
  5. 02:01Firing Sequence - Second Magazine
  6. 02:20Firing Sequence - Third Magazine
  7. 02:37Post-Firing Temperature Analysis
  8. 03:37Conclusion and Recommendations

Frequently Asked Questions

How effective are BCM KeyMod Rail Covers at reducing heat on an AR-15?

BCM KeyMod Rail Covers are effective at mitigating heat transfer. After firing 100 rounds, the covers kept the handguard surface between 130-178°F, allowing the shooter to hold them, though the bare top of the handguard became too hot to touch comfortably.

What temperatures can be expected on an AR-15 barrel and handguard during rapid fire?

During rapid fire with 100 rounds of 5.56mm ammunition, the AR-15 barrel can reach temperatures between 299-428°F, while the handguard surface without covers can become too hot to hold comfortably.

What accessories were used in the BCM KeyMod Rail Covers heat test?

The test firearm was equipped with a Trijicon ACOG optic featuring a Primary Arms ACSS reticle, mounted using an American Defense Manufacturing mount. Standard capacity magazines, including a 40-round PMAG and a 30-round Lancer Mag, were also utilized.

Can BCM KeyMod Rail Covers be customized or cut?

Yes, the video mentions that BCM KeyMod Rail Covers are 'cuttables,' meaning they can be modified to fit specific lengths or configurations on the KeyMod rail system.

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