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AR in x39?
- Thread starter Atlantis
- Start date
So my buddy has a 16" bear creek arsenal x39 upper on a Noreen Firearms lower that I’m trying to fix for him. We shot it yesterday for the first time and keep getting failure to feed every few shots and the bolt doesn’t hold open on an empty mag.
Using C products mags (work fine in my BCA x39 upper and anderson lower).
His lower has a standard carbine buffer and what looks like a standard carbine buffer spring. He bought the complete lower from a shop.
What else to check?? Can’t go any lighter on the buffer and buffer spring.
Maybe the upper is undergassed? Not enough pressure to cycle? Or is that when it’s overgassed?
Using C products mags (work fine in my BCA x39 upper and anderson lower).
His lower has a standard carbine buffer and what looks like a standard carbine buffer spring. He bought the complete lower from a shop.
What else to check?? Can’t go any lighter on the buffer and buffer spring.
Maybe the upper is undergassed? Not enough pressure to cycle? Or is that when it’s overgassed?
After disassembling they gas tube one of the 2 set screws on the gas block was quite loose. The other screw was extremely tight. I don’t know if that one loose screw would have caused this. I’ll have to check again before I bring it to steve at northeast arms to open up the gas port a bit.
I’d guess it’s at least 1200+ rounds and today I finally broke the extractor
I need to get some spares. I wonder who makes the best x39 extractors? I’m sure BCA will ship me a replacement at no cost but I need extras.
Sunny
NES Member
For those interested in building from scratch, PSA has a kit with both receivers and bcg. The rest is just regular AR parts.
The side charger handle and side of the receiver is getting chewed up from the cases hitting it. All the cases land about 330-4 o clock. I’m running a standard carbine spring with a spikes tactical T2 (tungsten powder?) buffer. I have a AR10 spring kicking around. Should try it out.
btnh6668
NES Member
Hopefully it will out last 1200 rounds
I would - short money.Err maybe I should order some ARx39 backup parts......![[thinking]](/xen/styles/default/xenforo/smilies.vb/010.gif "Thinking [thinking]")
I'm curious to see how long the bolt will last. BCA claims 9310 steel and MPI so hopefully it lasts a bit.
I already have a tracking number from BRA.
Sweet! Which one did you get? I wasn't too familiar with Windham x39 uppers. Just browsed their website. This one looks pretty cool. If I ever destroy my BCA upper maybe I'll upgrade to one of those
![[laugh]](/xen/styles/default/xenforo/smilies.vb/012.gif "Laugh [laugh]")
7.62x39 Pistol Upper Kit
Just add your AR15 Pistol Lower Receiver to this 7.62 X 39mm Pistol Flattop Upper Kit and you're ready for the range. The assembly includes a 9” medium profile barrel with a 7” Windham Weaponry free-float railed handguard. The barrel has a Melonite QPQ finish with an A2 flash suppressor, and is...
shop.windhamweaponry.com
I was very tempted to get the pistol, but got this one Windham Weaponry Upper Receiver Assembly for 7.62×39 with A2 Front Sight – Less Carry Handle – Windham Weaponry, IncSweet! Which one did you get? I wasn't too familiar with Windham x39 uppers. Just browsed their website. This one looks pretty cool. If I ever destroy my BCA upper maybe I'll upgrade to one of those
7.62x39 Pistol Upper Kit
Just add your AR15 Pistol Lower Receiver to this 7.62 X 39mm Pistol Flattop Upper Kit and you're ready for the range. The assembly includes a 9” medium profile barrel with a 7” Windham Weaponry free-float railed handguard. The barrel has a Melonite QPQ finish with an A2 flash suppressor, and is...shop.windhamweaponry.com
Tallahassee
NES Member
308?
Tallahassee
NES Member
I wouldn't go that extreme, you can own both. I have an AK that actually likes to get sandwiched in between two 308s in the safe.
Damn that was quick. Got the 2 extractors from Black Rifle Arms today. Going to run this one to see how well it goes compared to the BCA extractor.
They got some nice uppers on their site. Maybe one of these days I’ll upgrade to one of their uppers. Not cheap but I’m sure they’re much better than BCA
They got some nice uppers on their site. Maybe one of these days I’ll upgrade to one of their uppers. Not cheap but I’m sure they’re much better than BCA
steve8140
NES Member
I’ve had my 7.62x39 AR for close to a decade. Only issue I’ve had was the standard hammer spring wouldn’t always ignite the primers. I swapped it out with a extra power hammer spring and it’s been reliable ever since.
I broke one extractor from shooting a lot of steel cases ammo and replaced it. I should buy one Andrew posted up above to have a spare.
I broke one extractor from shooting a lot of steel cases ammo and replaced it. I should buy one Andrew posted up above to have a spare.
One thing I have noticed is because of the fact that customer service is dwindling in this industry people really appreciate it. One of the reasons why High Point stays in business probably the only reason is because they honor their warranty and they repair their s***. The skinflints who buy their stuff jerk off over that big time. The guns are rough trash but they stand behind the product and want the customer to have a working gun. BCA probably has similar philosophy.
