...

Come to think of it, I do have a 3# hammer and a jointed aluminum rod. Better take it to the range with me.
Hope none of the cartridge cases blow their heads.

If you don't feel safe with the product, I'll offer you a full refund right now. Better safe than sorry right?
 
2410582_300.jpg
 
NEA's kind offer to take the barrel back for a refund if I had any safety concerns made me wonder.
He knows waaay more about ARs than I do, and waaaaaaay more about his products.
So I pulled the ejector from the bolt (brand name BCG purchased recently from another site sponsor), and got out my headspace gauges. Hadn't bothered when I first assembled the upper, it is rare that headspace is a concern.
The bolt would not close at all on the No Go. Proper thing.
The bolt would barely close on the Go; clicked over. Could feel the gauge.
Tried a couple of different makes of factory ammunition. Could feel the cartridge as the bolt rotated to lock.
This with the ejector out.
If this were a bolt action target rifle, great.
In a semi auto, not so great.
You really don't want a round to hang up as the bolt is slamming shut.
Well, the BCG is near new, the barrel extension is new. Probably a stacked tolerances situation.
So, I pulled the experienced Colt BCG from my competition upper.
Different story. Closed freely on the Go, wouldn't close on the No Go.
As things should be.

I am assuming that after a bit of use, the brand new barrel extension will be broken in, and the BCG I intended to use will be OK. Save swapping BCGs from upper to upper.

I am very interested in how this barrel shoots. If it is competitive, it would be in the best buy category.
 
Well, not to dissappoint, or thread hijack, but, I managed to get out again with a somewhat reasonable test with my rifle last night. I too purchased an 18" barrel for my NEA-15 rifle, and after a rough start with some cheap 55 grain, I managed to get it shooting okay last night.

Turns out I'm not that great at shooting prone, and the trigger really is a weak point on this rifle. There's a groove being worn into the trigger face from the sear, which I suspect is why the travel is so rough, and also why I can't tell where it's going to break.

All that aside, it looks like I'm going to focus on 24 grains, using Hornady 75 grain HPBT match bullets.

NEA15%2006-28-2012.JPG

Target%2006-28-2012.JPG


I know, the groups aren't crazy good, but, I *was* in the zone when I shot #3, and I know for fact that for #5 I was having some poblems holding steady left to right, so, until next week, there you go.... I should also point out that I have another target where the Hornady Steel Match 75 grain shot a group just as tight as #3, so, the gun can clearly shoot better than me.

Also, sorry for the splatter all over the target. I had a smallbore silhouette ram hung right next to the target that I was practicing on with my .22 while letting the AR cool. Next time I won't hang it so close...

Edit.. Groups are at 100 yds, prone, setup as shown. Well, no, the first couple of groups had a rear bag under the stock, but, it's very difficult to get one of these rifles stable for precise shooting.
 
The bolt would barely close on the Go; clicked over. Could feel the gauge.
Tried a couple of different makes of factory ammunition. Could feel the cartridge as the bolt rotated to lock.
This with the ejector out.
If this were a bolt action target rifle, great.
In a semi auto, not so great.
You really don't want a round to hang up as the bolt is slamming shut.

A minimum length chamber shouldn't be a problem for an AR. There is a reasonable camming force involved when the carrier slams forward. As long as the bolt closes on the GO gauge it will be fine.

The benefit to a minimum headspace chamber is it should be more accurate than a sloppy machine gun chamber.
 
NEA's kind offer to take the barrel back for a refund if I had any safety concerns made me wonder.
He knows waaay more about ARs than I do, and waaaaaaay more about his products.
So I pulled the ejector from the bolt (brand name BCG purchased recently from another site sponsor), and got out my headspace gauges. Hadn't bothered when I first assembled the upper, it is rare that headspace is a concern.
The bolt would not close at all on the No Go. Proper thing.
The bolt would barely close on the Go; clicked over. Could feel the gauge.
Tried a couple of different makes of factory ammunition. Could feel the cartridge as the bolt rotated to lock.
This with the ejector out.
If this were a bolt action target rifle, great.
In a semi auto, not so great.
You really don't want a round to hang up as the bolt is slamming shut.
Well, the BCG is near new, the barrel extension is new. Probably a stacked tolerances situation.
So, I pulled the experienced Colt BCG from my competition upper.
Different story. Closed freely on the Go, wouldn't close on the No Go.
As things should be.

I am assuming that after a bit of use, the brand new barrel extension will be broken in, and the BCG I intended to use will be OK. Save swapping BCGs from upper to upper.

I am very interested in how this barrel shoots. If it is competitive, it would be in the best buy category.

so you are saying the BCG is not good? Is it a NEA BCG, or some other brand?
 
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