NEA CCS stock issues

rommelrommel

rommelrommel

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I have a NEA 10.5 that runs 100% on the CCS. I wanted to go shorter, so I picked up a Troy 7.5 upper which worked well for a few mags but since has been a headache.

The Troy upper runs 100% on my other lower (Colt Canada, JP silent captured spring for a buffer.)

However, after the first few mags it started not properly ejecting spent cases. The case ends up not being ejected at all, the bolt picks up a new round, and then I get a double feed of sorts with the live and spent round. If I load one round the bolt locks back, but the case doesn't eject. I've tried a few different mags, I've tried putting a noveske KX5 on the muzzle, bare muzzle, and the problem still occurs essentially every time.

NEA blew me off as soon as I said it was not their upper, all they could say was "gas problems" which wasn't very helpful. Considering that Troy sells this gun with essentially their lower as a package in the USA...

Any suggestions?
 
First thing I did was swap the bolts in the bolt carriers so the Troy bolt would be on the Troy barrel with the modified NEA carrier.

Went out and messed with them a bit more and the ejector is really weak on the Troy bolt relative to the other bolts I have. I'm going to swap ejectors and see what happens.
 
rommelrommel said:
First thing I did was swap the bolts in the bolt carriers so the Troy bolt would be on the Troy barrel with the modified NEA carrier.

Went out and messed with them a bit more and the ejector is really weak on the Troy bolt relative to the other bolts I have. I'm going to swap ejectors and see what happens.
Click to expand...

The ejector or the extractor?
 
*MALICE* said:
The ejector or the extractor?
Click to expand...

He said the empty cases do not eject so I would suspect the ejector, unless the cases stay in the chamber and do not got extracted. It happens often if you shoot a lot that some filth might get under the ejector and on the spring and that the ejector cannot do its job properly but you might as well check out your extractor.
 
-[Crosshair]- said:
He said the empty cases do not eject so I would suspect the ejector, unless the cases stay in the chamber and do not got extracted. It happens often if you shoot a lot that some filth might get under the ejector and on the spring and that the ejector cannot do its job properly but you might as well check out your extractor.
Click to expand...

The reason I ask is because some people mistake the two parts. ;)

While a stuck ejector pin, or one that the spring is to weak on will prevent a case from ejecting from the gun, often a bad extractor/extractor spring will too.

I find that extractor springs that work on longer barrels ar15's sometimes do not not have enough force to keep the rim held in place on shorter barrelled guns.

The case ends up slipping out of the extractor after it has been removed from the chamber and then fails to eject.

If the extractor spring doesn't have a donut, add one, it may help.
 
*MALICE* said:
The reason I ask is because some people mistake the two parts. ;)

While a stuck ejector pin, or one that the spring is to weak on will prevent a case from ejecting from the gun, often a bad extractor/extractor spring will too.

I find that extractor springs that work on longer barrels ar15's sometimes do not not have enough force to keep the rim held in place on shorter barrelled guns.

The case ends up slipping out of the extractor after it has been removed from the chamber and then fails to eject.

If the extractor spring doesn't have a donut, add one, it may help.
Click to expand...

Yup. A three-spiral extractor spring with a neoprene/rubber O-ring around it should be a basic little upgrade for reliability, especially on shorter rifles.
 
It was the ejector that is obviously weak, but may as well do the extractor spring as well. Brownells has a little extra strength kit for 11 bucks or so.
 
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