My first AR was a Norc. I added the Magpul BAD lever and had issues with it not locking back.
I removed it and the rifle functions flawlessly.
I then purchased a Stag and I installed the BAD lever on it to see if Incould repeat the failure.
The Stag has no issues with it. I then built 2 'Noveskes and I installed the Phase 5 EBRv2 on both my Noveskes with no issues.