Preview of Curtis Vector Quick Change barrel system

[MDM]

This idea looks awesome but I am suspicious of this. To my knowledge there is no mechanical fastener that is impervious to backing out. If they are really "lock" screws and can not back out, then how does the person remove them? I am not trying to be critical or rude with my questions, just curious.

Regular machine set screws and they do slightly bite into the tenon. The Curtis team has done well with them on the PRS circuit this year. Another thing people don't realize, if you don't like the QC set screw feature, you don't have to use it. Just torque as normal. I've seen these beaten around in matches and I understand the skeptism because it is a simple design, but once snugged as instructed, that barrel isn't moving.