DB Alloy troubleshooting

Originally posted by u/Glassimamaya at 2025-06-11T20:49:44Z

Reddit permalink

Finally got around to bringing my first print out and ran into some issues. ~150 rounds today and a large amount of FTF. After a good amount I noticed the forward part of the upper receiver is bent. I also noticed a couple rounds where it failed the bolt is tearing into the primer pocket and almost unseating it. I know the Mac design has some problems regarding feeding but this surprised me. Build is AVES upper receiver and feed ramp, bolt is from KAK, and printed in PA6-CF. thanks for any insight!

Source: https://b.thumbs.redditmedia.com/K6PnSgdRn_oF7bIk2um1dGULtqE-_4URNIagC0vfkGg.jpg