05-09-2021, 11:25 PM
Sounds like you're on the right track. The ASC mags for 6ARC definitely have the cartridge sitting higher. My guess is that will correct your failure to feed. If not, you may need to dial gas back just a touch. IF the BCG is moving too quickly, it can sometimes cause FTF. Change only one thing at a time, and you'll get it sorted in short order.