He Built A .50 Cal Sniper Rifle In High School 🤯

Published on March 9, 2026
Duration: 1:00

This entry details a high school student's ambitious, albeit dangerous, project to build a .50 caliber projectile launcher using a hydrogen and oxygen gas propulsion system. It highlights the technical ingenuity involved, the legal ambiguities surrounding homemade devices, and critical safety considerations that ultimately prevented the device from being fired. The narrative also touches upon the consequences of seeking professional help and the subsequent ATF involvement.

Quick Summary

A high schooler built a .50 caliber projectile launcher using a hydrogen and oxygen gas propulsion system powered by deer feeder batteries and an electrolyzer. Despite its unique design, safety concerns prevented it from being fired. The project highlighted legal ambiguities surrounding 'destructive devices' at the time, as it lacked gunpowder combustion.

Chapters

  1. 00:00Intro: .50 Cal Sniper Rifle Build
  2. 00:05Hydrogen Oxygen Propulsion System Explained
  3. 00:17Age and Safety Concerns
  4. 00:26Legal Loophole for 'Destructive Device'
  5. 00:42Machinist Reports to ATF
  6. 00:53ATF Reaction and Legal Status

Frequently Asked Questions

What kind of propulsion system did the high schooler use for his .50 caliber projectile launcher?

The builder utilized a unique hydrogen and oxygen gas propulsion system. This was achieved by using an electrolyzer powered by deer feeder batteries to split water into hydrogen and oxygen gas, which was then detonated by a spark plug.

Was the homemade .50 caliber projectile launcher legal?

At the time of construction, the device was in a legal gray area. Federal regulations for 'destructive devices' primarily focused on gunpowder combustion and casings, which this gas-propelled design lacked. However, the ATF still showed interest due to the nature of the device.

Why did the builder not fire his homemade projectile launcher?

Despite completing the build, the builder never fired the device. This decision was primarily due to significant safety concerns raised by his mother about detonating hydrogen and oxygen gas in close proximity to his face.

What happened when the builder sought professional help for his project?

The builder hired a machinist to assist with the project. However, the machinist ultimately reported the builder to the ATF and kept the money paid for the services, despite the device not being technically illegal at the time.

More Gunsmithing & DIY Videos You Might Like

More from Shawn Ryan Show

View all →