
Originally Posted by
JusticeM4
Hello guys, need your help with some jamming issues on my AR15. It is a 16in Carbine with Spikes lower and Rguns upper.
My first range trip a month ago was fine, shot about 100rds to test it out and no issues. 2nd and 3rd range trip (today) I've had some issues with not ejecting the empty cartridges.
On my 2nd trip apparently the spring on the extractor fell out (dunno how); I always field strip and clean down to the extractor after each range session. So on that range trip it would not extract the empty cartridge after every shot. RO helped me figure this out so a extractor is on order.
Today (3rd range visit) I went to the range and borrowed my roomate's BCG (Spikes) to use on my AR because I want to sight in my new scope. First mag shoots without any problems, shooting 1rd every 2seconds. The second mag I do a bit of rapid fire and around 25rds it fails to extract the empty cartridge with another round trying to load.
What could be the issue? I am using P-mags and my friend's Bolt carrier group, and the rifle is lubed. Thanks in advance!
As some have stated, tight chamber or bad extractor/spring or both. Get a new extractor, which you are already in the process of getting, a five coil extractor spring, with black insert, and do not use the doughnut...it's too much tension, which will leave you with again, a stuck case.

Originally Posted by
Univibe
Magazines won't cause failure to extract.
1. What kind of ammo are you using? Steel case sometimes causes problems in some guns. Lacquered ones can glue up your chamber
That statement is as wrong as two boys ****in. Please stop with the internet myth/Hearsay/Bullshit. Try and use a blow torch to see if you can melt the lacquer off and report back. The ones that I have seen were due to a worn extractor, or using the doughnut + insert + a 4 coil extractor spring, or a POS gun with a tight chamber. Myself and several others have proven this myth wrong over and over and over again....It does not "melt", causing these types of failures. The closes theory is that in some instances, an uneven application of the lacquer on the case, which produces a "drip" of hardened lacquer, will cause the case dimension to be slightly increased/deformed and wedged into the chamber during the firing sequence, that "may" cause a stuck case. And that, is the best theory going, and it's still only a theory. After personally shooting over 15K of lacquered Wolf, Tiger and Brown Bear, many times in carbine courses, and in regular range sessions, through 4 ARs, I have not had one issue with that ammo, running my ARs up to 4K rounds a couple of years ago to vet my ARs, without cleaning, just lube.
For God and the soldier we adore, In time of danger, not before! The danger passed, and all things righted, God is forgotten and the soldier slighted." - Rudyard Kipling
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