AR-15 vs BANK VAULT DOOR! Is It Bullet Proof??

Published on January 28, 2020
Duration: 16:23

This video details an advanced test of an AR-15's ability to penetrate a heavy bank vault door using M855 green tip ammunition. The instructor demonstrates a technique of firing multiple rounds into the same impact point to achieve full pass-through. The experiment highlights the effectiveness of steel-core ammunition against hardened barriers and showcases the destructive potential of the AR-15 platform.

Quick Summary

An AR-15 equipped with M855 green tip 5.56x45mm ammunition can penetrate a bank vault door, especially when multiple rounds are concentrated on the same impact point. Steel core ammunition like M855 is known for its superior performance against hardened barriers due to its density and the high velocity of the 5.56x45mm round.

Chapters

  1. 00:00Introduction: Bank Vault Door Test
  2. 00:49Bank Vault Door Description & Previous Test
  3. 01:49Pistol Caliber Testing (22LR, 380 ACP, 9mm, 40 S&W, 357 SIG)
  4. 04:50AR-15 5.56x45mm Test (Initial)
  5. 06:23AK-47 7.62x39mm Test & GoPro Incident
  6. 08:37AR-15 M855 Green Tip Test (Single Shot)
  7. 10:47Second 7.62x39mm Test (Incendiary)
  8. 12:40Follow-up: AR-15 M855 Full Penetration Attempt
  9. 14:17Results: Full Pass-Through Achieved
  10. 15:18Bullet Recovery
  11. 16:04Conclusion & Final Thoughts

Frequently Asked Questions

Can an AR-15 penetrate a bank vault door?

Yes, an AR-15 firing multiple M855 green tip 5.56x45mm rounds concentrated on the same spot can achieve full penetration through a heavy bank vault door. A single shot may cause significant damage but not necessarily a complete pass-through.

What type of ammunition is best for penetrating hard barriers like vault doors?

Steel core ammunition, such as the M855 green tip 5.56x45mm, is generally more effective at penetrating hard barriers due to its increased density and hardness compared to standard lead core rounds.

How does ammunition velocity affect penetration?

Higher velocity ammunition generally offers better penetration capabilities. The 5.56x45mm round, being faster than the 7.62x39mm, demonstrated deeper penetration into the vault door despite its smaller diameter.

What was the outcome of testing different calibers against the bank vault door?

Pistol calibers like 9mm, .40 S&W, and .380 ACP caused superficial marks but no significant damage. The .357 SIG caused a tiny dent. The AR-15's 5.56x45mm and AK-47's 7.62x39mm showed more substantial effects, with the 5.56x45mm M855 eventually achieving penetration.

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