AK-47 VS AR-15 - 7.62 VS 5.56 VS CONCRETE BLOCK

Published on March 2, 2017
Duration: 4:46

This video compares the barrier penetration capabilities of the AK-47 (7.62x39mm) and the AR-15 (5.56x45mm) against concrete cinder blocks. The 7.62x39mm round demonstrated superior performance, causing the block to structurally fail, while the 5.56mm round only created an entry hole and fragmented internally. The test highlights the kinetic energy advantage of the heavier 7.62x39mm round for defeating cover.

Quick Summary

The 7.62x39mm round fired from an AK-47 proved more effective against concrete blocks than the 5.56mm round from an AR-15. The 7.62x39mm caused the block to structurally fail, while the 5.56mm only created an entry hole and fragmented internally.

Chapters

  1. 00:00Introduction: AK-47 vs AR-15 Concrete Block Test
  2. 00:38AR-15 (5.56) Concrete Block Test Results
  3. 01:24AK-47 (7.62x39) Initial Test & Re-shoot
  4. 02:01AK-47 (7.62x39) Concrete Block Destruction
  5. 03:27Conclusion: 7.62 vs 5.56 Barrier Penetration

Frequently Asked Questions

Which rifle caliber is better at penetrating concrete blocks, 7.62x39mm or 5.56mm?

In this test, the 7.62x39mm round fired from an AK-47 demonstrated superior performance against concrete cinder blocks, causing the block to structurally fail and break apart. The 5.56mm round from the AR-15 only created an entry hole and fragmented internally.

What happened when the 5.56mm round hit the concrete block?

The 5.56x45mm round fired from a Smith & Wesson M&P15 created a clean entry hole in the first layer of the concrete block. It fragmented internally but did not penetrate the second wall or cause significant structural damage to the block.

What were the results of the 7.62x39mm round hitting the concrete block?

The 7.62x39mm round fired from an AK-47 caused visible cracking across the face of the concrete block. Upon inspection, the block had structurally failed and broken into multiple pieces, indicating a much higher energy transfer.

Why is the 7.62x39mm round more effective against barriers like concrete?

The 7.62x39mm round typically has a heavier bullet mass and higher kinetic energy compared to the 5.56mm round. This increased energy and momentum allow it to transfer more force into the barrier, leading to greater penetration and destruction.

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