I've had to tune several aftec extractors to have them function correctly. Typically there is not enough forward relief at the bottom inside edge where the rim makes first contact when feeding. This causes the rim to bind as the round chambers and locks things up. It's been my experience that if the ftf happens with the round below the extractor, this relief cut is 90+%the issue. While the Aftec may help some/most, it is not a magic fix for all problems, and is not always a drop in part.
Sent from my SM-G900V using Tapatalk
