Yea it looks like the piston hits the main body of the carrier. The charging handle latches onto the top of the carrier so in order for it to hit the top portion we're cutting into, it would have to be a design similar to the AR charging where the rod passes through but it's not.
I think the cuts in the body may be a little too thin, I'd be worried about cracks. I do like how light that looks though. If you want it tested for a few thousand rounds next season and at some training classes let me know. If it's ganna crack or fail, that would do it.