Update - immediate ejection / bolt issues on 5.7x28 upper - CMMG 5.7X28mm 8in Banshee Upper Group Receiver

I wanted to follow up on the previous review submitted on Aug 2nd. CMMG did immediately send my BCG back with a new bolt and I did not have to wait the estimated 4+ weeks for someone to inspect and evaluate the stuck ejector.

First trip to the range today and both the Speer 40 gr & Range Dynamics 62gr ran flawlessly through it. Not a single issue! Consistent feeding, ejection and BCG cycling. Exactly what I have come to expect from CMMG based on previous experiences. This is definitely a keeper and was an absolute blast to shoot! Especially with the 62gr subsonics. The spring action in the buffer is noticeably louder than the report at the barrel or the ejection port with a suppressor attached. This is quieter than any 300 BO I've owned using subs.

I would definitely recommend this upper mated to a quality built lower, but to be honest, for what I spent on building a quality lower I could have just bought the pistol version of this and been done. If I had to do this again, that's definitely the route I'd go. I chose to use an FDE Aero M4E1 stripped with Geissele internals, buffer tube, buffer and spring.