Rock Bottom Airsoft chronos the custom LT-20 Barrett rifle that can use CO2 as power source... "In this video we follow up on the 12g CO2 conversion we previously did to the Lancer Tactical LT-20 Barret 50 replica. You can catch that video here.

In this video we are going to run the LT-20 through the chrono and see how it performs without spring power. I haven't tried out this CO2 bolt since we fit it in this Airsoft Barret M82a1 replica. As you will see here the sound at least is a great improvement, unless of course you want to be stealthy."