A while back we did a propeller head episode discussing how to make it safe to fire a wide variety of 30-06 loads through an M1 Garand by using an adjustable gas plug:
We were immediately deluged with requests to test an alternative product on the market:
The Garand Gear Gas Plug.
This device works differently in that it increases the volume of the gas cylinder by being hollowed out rather than venting gas via a port.
We put it to the test with our highspeed camera and here's the result!