There's A 3D Proonted AK-47 That Works (And It's Not Mine)

Published on August 22, 2019
Duration: 6:37

This video from Brandon Herrera explores the challenges and successes of 3D printed AK-47 receivers. It details a catastrophic failure of a fully 3D printed receiver due to plastic locking lugs and contrasts it with the functional DNO Firearms DX7, which utilizes a metal front trunnion to contain critical stresses. The expert analysis highlights the importance of material science and design in 3D printed firearm components.

Quick Summary

Brandon Herrera explains that his 3D printed AK receiver exploded because its critical locking lugs were made of ABS plastic, unable to withstand firing pressures. In contrast, the DNO Firearms DX7 is functional because it integrates a metal front trunnion to contain these stresses, isolating them from the 3D printed receiver body.

Chapters

  1. 00:00Brandon's Failed 3D Printed AK
  2. 00:343D Printer Introduction
  3. 01:23Introducing the Working DNO DX7
  4. 01:40DNO DX7 Test Footage
  5. 02:50Technical Failure Analysis
  6. 03:40Technical Success Analysis
  7. 04:50Simplified Explanation
  8. 05:53Upcoming AK Class

Frequently Asked Questions

Why did Brandon Herrera's 3D printed AK receiver fail?

Brandon Herrera's 3D printed AK receiver failed because the critical locking lugs, which contain the immense pressure of firing a cartridge, were made of ABS plastic. This material lacked the necessary strength to withstand these forces, leading to a catastrophic explosion on the first shot.

What makes the DNO Firearms DX7 3D printed AK receiver functional?

The DNO Firearms DX7 3D printed AK receiver functions successfully because it incorporates a headspaced metal front trunnion. This metal component houses the critical locking lugs, effectively isolating the high stresses from the 3D printed plastic receiver body and ensuring reliability.

What is the key difference between a failed and a successful 3D printed AK receiver design?

The key difference lies in the material used for critical stress-bearing components. A failed design, like Brandon Herrera's, uses 3D printed plastic for locking lugs. A successful design, like the DNO DX7, integrates a metal front trunnion to handle these high-stress functions, while the receiver body can be 3D printed plastic.

Can 3D printed AK-47 receivers be reliable?

While a fully 3D printed receiver with plastic locking lugs is unreliable and dangerous, designs like the DNO Firearms DX7 demonstrate that functional and reliable 3D printed AK receivers are possible when critical components like the front trunnion are made from metal to handle firing stresses.

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