New Grendel upper won't chamber a round properly

[jertex]

I tried making minor adjustments to case size and still the same problems. I talked to customer service at the vendor today and he said that, from the pics, the upper needs to either be repaired or replaced. They sent me a pre-paid UPS shipping label and I'll be shipping it back this afternoon. I'm pretty happy with their response and it looks like they are a good vendor that stands behind their product. Once I get the upper returned, I'll provide an update to the post.