They crack on the legs. I’ve had it happen before with a few builds but they all don’t crack. It’s rare but does happen.
This is also why my gas block legs are double the size of the factory ones. I opted out of 300blk factory gas blocks to go with the new drop in style.
Also Marvin won’t sell his system outside of his builds. I tried to do a joint project and never heard back either so I developed my own parts.