first time taking AR out . Jamming issues, Advice ?

[Kidd X]

Although I see this suggested a lot, I find that heavier buffers don't tend to help much (if at all) if the rifle is grossly over-gassed . And when they do help.....the upper probably wasn't that over-gassed to begin with.

An extractor o-ring (if the extractor doesn't already have one) is the cheapest thing to try.

I'm fond of adjustable gas blocks, because they solve the problem closest to the source (oversized gas port) but admittedly they are not the cheapest solution

The O ring is the cheapest option but as mentioned it is a bandaid not a solution. On ultra short guns like the OP's(sub 10") then yes a heavier buffer alone likely won't solve the problem especially if the problem is a grossly over gassed gun ala a very large gas port. The adjustable gas block gives you the most control over the gas but a properly built rifle with a proper gas port is what should have been supplied from the beginning. You get what you pay for..

One thing i noticed about neas is usually very weak ejector springs. If you can drepress it with you finger with moderate to easy effort, then thats the culprit. Ymmv

The problem is not ejection as the rifle is failing to extract, which is the step prior to ejection.

When I built my shorty AR I had similar problems...fired case wouldn't extract, then a double feed. What solved it was a 'donut' under the extractor. It has run perfectly ever since. If it isn't _hard_ for you to move your extractor manually, this could very well be your problem.

Again the O ring is a bandaid which increases extractor tension, it does not solve the problem it simply alleviates the symptoms.

I had the same problem with a 7.62x39 NEA 7.5. These things are WAY over gassed! Ammo was being thrown at the 1 or 2 clock position, when it extracted. I tried upgraded extractor springs, heavier buffer, it got better but not perfect. I finally went with an adjustable gasblock, dialed the gas down and way it went. No problems now. I used a Superlative adjustable gasblock from CTCS. Pretty easy to swap the old one out. The only real problem i had was the OEM crush washer got deformed and I needed to cut it off. So if you are going to go down this route get a spare crush washer for your brake.

https://ctcsupplies.ca/collections/...djustable-gas-block-bleed-off-solid-melonited

And again, you get what you pay for. The crush washer itself is a one use item.

 

[Percussion]

Oops, i failed to read the post properly. So now points to overgassing, weak extractor spring, or both. Pretty what everyone else is saying.

 

[*MALICE*]

The adjustable gas block gives you the most control over the gas but a properly built rifle with a proper gas port is what should have been supplied from the beginning. You get what you pay for..

Next you're going to tell me that 'barrel makers' should actually torque their barrel extensions to spec rather than gluing them on with loctite/rocksett. lol

A lot of new/budget/boutique companies are using the gas port chart posted on arfcom to size their gas ports. It's just too bad that the chart on arfcom is totally oversized.

 

[Kidd X]

Next you're going to tell me that 'barrel makers' should actually torque their barrel extensions to spec rather than gluing them on with loctite/rocksett. lol

A lot of new/budget/boutique companies are using the gas port chart posted on arfcom to size their gas ports. It's just too bad that the chart on arfcom is totally oversized.

How true.