Try G&R Tactical and if they don't have Arms Unlimited
I was having similar symptoms from a 14.7" FN mid-gas upper.
Examination of spent cases showed aggressive extractor marks, extractor was jumping the rim.
I installed an O-ring under the extractor, and put in an H3 buffer. Problem solved.
I had some free time today and decided to try out the o ring since brownells is out of Colt extractor springs and I haven’t gotten them from anywhere else.
I went from having a few malfunctions per mag to having none over 200ish rounds.
I’m still gonna replace the extractor spring with a Colt spring but I’m happy at the moment.
5.56 brass is ejecting at 2 o’clock but it’s strongly ejecting instead of dribbling out.
Overall, I’m happy with the gun now and thank you all for the help. I’ll report back if anything changes after I get my hands on some Colt springs to replace the extractor spring and the various PSA springs that are in the gun
Bookmarks