7.62 upper trend

R

robab

CGN frequent flyer
Rating - 100%
49   0   0
Location
NL
Seems lately there is a lot of buzz and action on people buying and talking about the 7.62 x 39 upper. I totally understand seeing you can get ammo so cheap and in large supply.
I'm considering getting one myself.

Question for more knowledgeable people.

Any down side to the 7.62 upper ? Accuracy? Feeding ?

It would be nice if norinco made one for cheap so I wouldn't feel guilty about buying one.

Thoughts ,comments
 
In my opinion 7.62x39 is for red rifles.
-Copper washed or lacquered steel cases
-metal jacketed bullets (some is copper)
-Most of the cheap stuff uses corrosive primers
All things that every manufacturer of quality firearms will void your warranty for shooting through their rifle.

-x39 does not feed properly from straight body AR pattern magazines even with the correct follower, this usually isn't much of a problem with 5-10 round mags and people are going to come on and say that their rifle feeds fine so it must be fine for everyone, fact is that many other people have had nothing but problems getting it to feed in their AR's and XCR's using the 10 round XCR pistol mags. There is a reason the AK uses a curved magazine. Tapered cases requires curved magazine for reliability.
-Many ranges do not allow you to shoot ammo with steel core (lots of surplus x39 is)
-I've heard one of the provinces out east has banned it from use on crown land. I'm not sure why they would or how they would enforce this though.

In my opinion, if someone wants to shoot x39 they should buy an SKS or a CZ/VZ 58/858 (whichever ones aren't on the to be prohibited list).

As much as I don't like the idea of x39 in a modern black rifle I do recognize the benefits of a round this cheap and am planning to pick up another SKS soon (sold my last one a few years ago). I have no problem running corrosive steel cased ammo through a $250 rifle but not through my $3000 black rifles.
 
Irunguns has some uppers on for $350 usd. Buy a norinco lower for $150 from canada ammo and you're all set. It will run you less than a cz. As stated above there is a mag issue or I believe there is/are lowers that will accept am mags (I think one of hem is the cmmg mutant). I have also read about some feeding issues with m4 feedramps someone who has bought one of these uppers shall surely chime in here. The reviews about the windham have been positive so far though.
 
doc25 said:
Irunguns has some uppers on for $350 usd. Buy a norinco lower for $150 from canada ammo and you're all set. It will run you less than a cz. As stated above there is a mag issue or I believe there is/are lowers that will accept am mags (I think one of hem is the cmmg mutant). I have also read about some feeding issues with m4 feedramps someone who has bought one of these uppers shall surely chime in here. The reviews about the windham have been positive so far though.
Click to expand...

I am really curious about these uppers as well. Irunguns.ca has sold through two batches already and are working through their third batch. They’re selling complete 7.62x39, bcg and all. So, my understanding is, just bolt it on to your standard AR lower, pick up a couple of AR 7.62x39 mags (also available from IRG for $12USD), a case of surplus and you’re ready to rock and roll?
 
cr5 said:
In my opinion 7.62x39 is for red rifles.
-Copper washed or lacquered steel cases
-metal jacketed bullets (some is copper)
-Most of the cheap stuff uses corrosive primers
All things that every manufacturer of quality firearms will void your warranty for shooting through their rifle.

-x39 does not feed properly from straight body AR pattern magazines even with the correct follower, this usually isn't much of a problem with 5-10 round mags and people are going to come on and say that their rifle feeds fine so it must be fine for everyone, fact is that many other people have had nothing but problems getting it to feed in their AR's and XCR's using the 10 round XCR pistol mags. There is a reason the AK uses a curved magazine. Tapered cases requires curved magazine for reliability.
-Many ranges do not allow you to shoot ammo with steel core (lots of surplus x39 is)
-I've heard one of the provinces out east has banned it from use on crown land. I'm not sure why they would or how they would enforce this though.

In my opinion, if someone wants to shoot x39 they should buy an SKS or a CZ/VZ 58/858 (whichever ones aren't on the to be prohibited list).

As much as I don't like the idea of x39 in a modern black rifle I do recognize the benefits of a round this cheap and am planning to pick up another SKS soon (sold my last one a few years ago). I have no problem running corrosive steel cased ammo through a $250 rifle but not through my $3000 black rifles.
Click to expand...

Agreed. I'd keep x39 out of my ARs.
Now, an all new design like the CMMG MK47, that is a different story.
Proper mag and mag well, beefed up bolt. If it is manufactured and assembled properly (a question on a new-to-market product), then I might consider it.
 
Well I have over $5000 worth of rifles in 7.62X39, Two XCR'S and Stag with a custom 14.5" stainless steel upper. between them I have shot over 5 cases corrosive and non corrosives ammo. the XCR Micro is always a crowd pleaser at my club's annual open house where I typically go through 1/2 case of ammo with over 100 guests in less than 2 hours time.

Accuracy wise they are more than capable of hitting a 6" target at a 100 with a red dot while standing, 1/2 of that if I use magnification. I am not going to lie to you and say something like "sub MOA all day along" I have a Remington 700 .308 for that, the noise and the concussion coming out my rifles are just absolutely obnoxious, but they sure are fun to shoot ;)

If you want one and you can afford it? don't let anybody tell you how you should spend your money. shooting cheap ammo will not hurt your gun, beside most parts on a firearm are what I considered to be consumable parts anyways, expansive guns that can only shoot expansive ammo have no place in your collection.
 
cr5 said:
In my opinion 7.62x39 is for red rifles.

In my opinion, if someone wants to shoot x39 they should buy an SKS or a CZ/VZ 58/858 (whichever ones aren't on the to be prohibited list).

As much as I don't like the idea of x39 in a modern black rifle I do recognize the benefits of a round this cheap and am planning to pick up another SKS soon (sold my last one a few years ago). I have no problem running corrosive steel cased ammo through a $250 rifle but not through my $3000 black rifles.
Click to expand...

Your looking at it a bit backwards.

I didn't build a x39 upper cause I wanted to shoot x39.
I build build an x39 so I could shoot could shoot my favorite rifle for cheaper.

I got 2 uppers now. So far so good.
The trick is to make them piston uppers, then you keep the corrosive out of the receiver.
Mind you, I'm currently enjoying DI on my dissipator as I'm well stocks with non corrosive at the moment.

My 14" uses one of those new fangled Nea barrels with a modified Cmmg piston kit and so far it runs flawlessly with XCR mags.

This was my last build with the Cmmg setup but the 16" barrel that I since built the dissipator with.

IMG_0819_zpscskkai8r.jpg
[/URL]
 
drifter dave said:
Blah blah blah.
How many of you condeming 7.62 AR's have owned one?
Asc XCR pistol mags work well for me.
Click to expand...

The taper makes it very easy to feed and extract the round, since there is little contact with the chamber walls until the round is fully seated. This taper is what causes the AK-47 to have distinctively curved magazines (helping to distinguish AK-47s from AK-74s, which feed from a much straighter magazine).

Above was quoted from https://en.wikipedia.org/wiki/7.62×39mm

Like I said not everyone has problems while we are limited to 5-10 round mags but I've read numerous threads on this site in the past from guys having all kinds of problems feeding from the 10 round pistol mags.

Yup, no difference at all
View attachment 29654


Nice build Conte,
The only thing that needs is to be in 300 Blackout and it would be perfect. Since I handload I can shoot my 300BLK rifles for almost as cheap as x39 and I can get sub moa from my non restricted ACR with my 155gr handloads. I really need to do some load testing with my 300BLK AR and see what it can do.
View attachment 29655
 
Last edited:
Are there any reports of those straight 10 round 7.62X39 Pistol mags having problems with the tapered 7.62X39 when used in the firearm for which they were designed? I haven't heard of any.
 
Andy said:
Are there any reports of those straight 10 round 7.62X39 Pistol mags having problems with the tapered 7.62X39 when used in the firearm for which they were designed? I haven't heard of any.
Click to expand...

Are you talking about using the magwell conversion to use the xcr pistol mags in an SKS (rifle designed around the cartridge) or using the pistol mags in a x39 XCR (rifle adapted by the manufacturer to shoot x39)?
The 10 round pistol mags can be a problem in any rifle, both in x39 and 223/5.56. All of mine work well so far including my x39 pistol mag I use with my 6.8SPC AR but many people have had issues with them.
There are people on here who choose to bury their head in the sand and just run with the mine works so they are awesome mentality but reality is that it's a crap shoot if you get one that works well. I think more work than don't but there have been enough do not's that there have been quite a few people posting on this site telling about their troubles with them.
 
Michael Dempster said:
I am really curious about these uppers as well. Irunguns.ca has sold through two batches already and are working through their third batch. They’re selling complete 7.62x39, bcg and all. So, my understanding is, just bolt it on to your standard AR lower, pick up a couple of AR 7.62x39 mags (also available from IRG for $12USD), a case of surplus and you’re ready to rock and roll?
Click to expand...

Yeah IRG has some curved mags that are supposed to work fine and as stated the acr mags should work as well. The issues I have read about seem to be from guys who have pieced their uppers together themselves probably the innovators who started to build the interest in them. I spent my upper money on ammo so couldn't pick one of them up. If I had the cash I would get one without hesitation as I'm pretty sure PSA tried them out before manufacturing/selling them lol.

Some guys bought the Windham complete rifles and some the kits and I haven't seen any negative reviews. There was a thread on here by a guy who had a NEA rifle in x39 as well. Can't remember the round count but it seemed to work fine.
 
Andy said:
Are there any reports of those straight 10 round 7.62X39 Pistol mags having problems with the tapered 7.62X39 when used in the firearm for which they were designed? I haven't heard of any.
Click to expand...

It's not black and white from my expirence.

I had one upper that jammed constantly and needed work, I had another that ran fine.

I found it depended o the cut of the feed lips and the barrel to upper fit.

At 5 rounds the taper doesn't matter.
At 10 rounds it starts to effect the feed but a good at follower will solve it.
I found the taper caused more problems with the reinforcing nubs on the feed lips than the ability to move with in the mag.

The taper causes a loaded mag to put all the pressure on the rim causing it to hang up easily.
 
I got the Windham x39. Only 220rds through it. No issues except for light primer strikes on 21rds. I will be installing a Hyperfire 24c and that should fix the light strike issue. I have used a 10/10 XCR mag and it worked fine. I did mods to the mag as stated here:
http://www.ar15.com/forums/t_3_121/..._to_try_this___7_62x39_mag_modification_.html
So far I'm happy with it. However, round count is too low to pass judgement. I'll post up as I get to 1k-2k-3k round counts.
 
Steiner said:
No issues except for light primer strikes on 21rds. I will be installing a Hyperfire 24c and that should fix the light strike issue.
Click to expand...

Oh yeah, I forgot about that issue.

I've had no problems with a Geiselle SD-3G, but a milspec bushmaster trigger, and my Jewel trigger won't pop them consistently.

I plan to try a Wolff XP hammer spring with the Jewel as it's installed in a lower I want to work with one of my x39 uppers.
 
The benefits to running an upper in 7.62x39 are to:
A) take advantage of relatively cheap, factory, centre fire ammo out to max. 200-300m. It might be for plinking, 3-gun or whatever.
One can handload bulk, cheap 5.56 for pretty close to the cost of factory 7.62x39, but that margin is growing
B) retain the ergos of the AR without having to put lipstick on a pig like guys do dressing up their CZs.
C) keepin' it cheap by just buying mags and an upper as one already has a lower.

The CZ is a great contender for this caliber, but unless one already has one, prices have gone full retard making an AR upper a very much viable option.
 
doc25 said:
Yeah IRG has some curved mags that are supposed to work fine
Click to expand...
if pinned to 5 like all that is legal in Canada, they work great (ASC 5/30 mags). But if you look at reviews of them in the uSA where regular capacity magazines are allowed they have issues
 
robab said:
Seems lately there is a lot of buzz and action on people buying and talking about the 7.62 x 39 upper. I totally understand seeing you can get ammo so cheap and in large supply.
I'm considering getting one myself.

Question for more knowledgeable people.

Any down side to the 7.62 upper ? Accuracy? Feeding ?

It would be nice if norinco made one for cheap so I wouldn't feel guilty about buying one.

Thoughts ,comments
Click to expand...

The problems with a x39 rifle other than the mags come from the bolt. Generally speaking, most manufactures take a standard AR15 bolt and thin it out to accommodate the larger casing. This could lead to reduced longevity.

The CMMG MK47 Mutant from Questar solves the mag issues (takes AK47 mags) and the bolt issue (uses a shortened AR10 bolt) all in an AR15 package. The only proprietary parts are the bolt, charging handle and a special weight buffer.

I bought the rifle because I wanted an ability to shoot consistently cheap ammo.
 
Donster 125 said:
The problems with a x39 rifle other than the mags come from the bolt. Generally speaking, most manufactures take a standard AR15 bolt and thin it out to accommodate the larger casing. This could lead to reduced longevity.

The CMMG MK47 Mutant from Questar solves the mag issues (takes AK47 mags) and the bolt issue (uses a shortened AR10 bolt) all in an AR15 package. The only proprietary parts are the bolt, charging handle and a special weight buffer.

I bought the rifle because I wanted an ability to shoot consistently cheap ammo.
Click to expand...

How is the mutant for reliability? Was hoping someone would buy one and do a review after they put a considerable number of rounds down range
 
You must log in or register to reply here.
Back
Top Bottom