AR-15 won't cycle past 3 rounds

[sobi1998]

I can't even count how many times I've had to post about this rifle. It's been the bane of my existence for this past year. I've had numerous malfunctions and even took it back to the factory and got a new BCG. It's a Radical Firearms, say what you will about the company (I'll probably agree at this point).
Like I said, it is jamming after 2 or 3 rounds. Stovepiping/double-feeding to be exact. I've tried different mags and ammo, even got a new BCG from the company. I've tried different lowers. It's ejecting the shells to the 1:00 area.
I'm willing to try anything before I go barking up their customer service tree again. Any ideas?
Thanks


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[ed308]

If ejecting to 1 pm, that's over-gassed. But I'd start by checking the the ejector, extractor and springs for both. If the extractor has donut around the spring, see how it runs without the donut. For the over-gassed issue, consider a heavy buffer, heavier spring, M16 bolt carrier or an adjustable gas block.

 

[sobi1998]

If ejecting to 1 pm, that's over-gassed. But I'd start by checking the the ejector, extractor and springs for both. If the extractor has donut around the spring, see how it runs without the donut. For the over-gassed issue, consider a heavy buffer, heavier spring, M16 bolt carrier or an adjustable gas block.

It uses an m16 BCG if that matters?


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[IXLR8]

Put a couple of inert rounds or snap caps on a mag and manually cycle it. You may be able to see what is happening.

 

[Charlie]

Send it back to the company if it's that bad!

 

[unicom]

From what you have said I would agree it's a gas issue. I would beef up the spring and buffer. I had a similar issue. My issue was after about 10 rounds the bcg wouldn't travel all the way back and instead would jam on top of the next round and partially push the round up. For me it just didn't like the type of ammo. I believe I mixed in some subsonic with my regular target ammo and not enough umph from the round to cycle correctly.

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[unicom]

It could also be an issue with the ejector as stated previously. From my experience those would be my first two areas to check. And I second what ixlr8 said about snap caps. If all else fells take it to a gun smith and let them look it over.

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[Mikewood]

I would also recommend a heavy buffer.

http://www.brownells.com/rifle-part...s/ar-15-heavy-carbine-buffers-prod103842.aspx


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[sobi1998]

I would also recommend a heavy buffer.

http://www.brownells.com/rifle-part...s/ar-15-heavy-carbine-buffers-prod103842.aspx


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The company has always talked about how they use M16 BCG because of their use in full auto. Maybe they used a standard AR-15 spring and didn't think to use a heavy spring with their HEAVY BCG?


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[Bozz10mm]

Bad ejector pin or spring. Bad extractor or spring. Bad magazine. BCG over travel. Just a few things to check. Since you've switched BCGs and tried different mags and ammo, kinda rules those out.

So, pull and hold the charging handle all the way to rear. Does the front of the bolt go past the back of the ejector port?

 

[GonzoLonzo]

Try an adjustable gas block. Joe bobs has blemished ones on sale for $15. I have one on one of my rifles. Some say that it also lessens recoil if gassed properly but I guess I'm not that sensitive since I didn't feel the difference but it does run better.

https://www.joeboboutfitters.com/JB...ck_750_Black_p/jb-adjgasblock-750-blem-os.htm

 

[shooter60]

I was having the same problem and my gas block was not lined up properly with the hole in the barrel got it lined up and cleaned out and it works great now