Ung 12 shotgun... fail?

Daver_II said:
Probably not... but if these guns can't cycle a full mag, why would a company invest thousands upon thousands of dollars tooling up to produce if they couldn't even make a working prototype.


Plenty of products have been delayed due to parts they order being out of spec.
And I would not put it past one company doing something to sink another companies product.
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Because companies making crap products have never sold them to the public.

Ever.
 
I have a Derya and a MKA 1919 shotgun so I'm not in the market for another tacticool semi, especially as both of these firearms work quite well- but until I see some reviews by other people, I'll take this video with a grain of salt. That said, if I was looking for a shotgun like this I would certainly hold off on the purchase until reliability was confirmed.
 
#### i can't believe i didn't spot it ... my machinist coworker spotted it right away.


every single one of those guns is going to crack on the back end, maybe not in the first mag maybe not in 10 mags... but they will.

You can't have square corners and squared edges on a major stress part. Metallurgy 101

If you don't have radiused corners and chamfered edges it will crack every time.

if the load on the corner is not dispersed over a curve it will put all the stress applied to the part at the very corner... which is also the weakest point. Its the same reason you need to chamfer a hole before you put a bolt in... or at least use a proper sized washer (the bolt head has a chamfer edges so your head doesn't crack off and if the edge of the hole is not beveled/chamfered that curve sits on the straight corner of the hole and causes cracking)

this is the one that cracks... and it cracks right out of the perfectly square corner.

the first one that cracked, cracked dead center (thinnest part) from a straight corner edge as well


you could prvent these from cracking buy draw filing the edges ever so slightly, and taking a small round file into those corners.
 
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Tactical Imports said:
It's not uncommon even for well known firearms manufacturers to have teething problems on new products: http://www.vpc.org/regulating-the-gun-industry/gun-product-safety-notices/

That being said, like all firearms we import we do heavy testing to ensure compliance with our standards for durability and reliability. Once we get our sample back we will proceed with our testing proceedures. If it does not comply we will be requesting changes and a revised model for a new round of testing. We won't allow import if the guns do not pass our tests
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So the lab does have a sample.....well that's a start!!!!!
 
LordEvilPepper said:
#### i can't believe i didn't spot it ... my machinist coworker spotted it right away.


every single one of those guns is going to crack on the back end, maybe not in the first mag maybe not in 10 mags... but they will.

You can't have square corners and squared edges on a major stress part. Metallurgy 101

If you don't have radiused corners and chamfered edges it will crack every time.

if the load on the corner is not dispersed over a curve it will put all the stress applied to the part at the very corner... which is also the weakest point. Its the same reason you need to chamfer a hole before you put a bolt in... or at least use a proper sized washer (the bolt head has a chamfer edges so your head doesn't crack off and if the edge of the hole is not beveled/chamfered that curve sits on the straight corner of the hole and causes cracking)

this is the one that cracks... and it cracks right out of the perfectly square corner.

the first one that cracked, cracked dead center (thinnest part) from a straight corner edge as well


you could prvent these from cracking buy draw filing the edges ever so slightly, and taking a small round file into those corners.
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Oh wow..... I knew this too, you it went over my head... Glaringly obvious. *facepalm
 
Daver_II said:
Who is doing the testing?

I am skeptical for sure when it comes to this type of thing.

All it would take is a person with an interest in this gun not selling to do something to the test guns.

But who knows.. I was tempted, but I do not often buy first gen.
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+2

You have to wonder the motive behind making the video in the first place. If you had a series of defective products wouldn't the easier solution to the problem be to email the manufacturer for replacements under warranty? It seems the exact intention of going through all of the effort is precisely to discourage sales of said product
 
Tactical Imports said:
+2

You have to wonder the motive behind making the video in the first place. If you had a series of defective products wouldn't the easier solution to the problem be to email the manufacturer for replacements under warranty? It seems the exact intention of going through all of the effort is precisely to discourage sales of said product
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Ive made videos when the company's ####ed me off after i've had major issues with their products.... its kinda like going to social media when the government screws you over and shaming them into fixing it.

do you have a sample in hand? is it all square corners on the back of the receivers like in the video?

if so there will be problem... a lot of problems. if they finish them properly this will be a non issue
 
Tactical Imports said:
+2

You have to wonder the motive behind making the video in the first place. If you had a series of defective products wouldn't the easier solution to the problem be to email the manufacturer for replacements under warranty? It seems the exact intention of going through all of the effort is precisely to discourage sales of said product
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Sometimes you can be so mad with someone that publicly shaming them just feels like a better solution. Warning everyone else to not even bother I would guess is the exact intention of this video.

Also, if the manufacture of firearms is so bad that eight out of ten fail, they would have to send him 40 more to get eight good ones. He probably figured it just wasn't worth the hassle. If that's how bad they are after only two or five or ten shots. I doubt any of them would survive a hundred. Why even both with warranty at that point.
 
It says in the video that they already send him replacement receivers but they did not even fit with original barrels. I guess FRT will be granted 100% with this gun we will not harm anyone except us if it goes to parts
 
erkner said:
It says in the video that they already send him replacement receivers but they did not even fit with original barrels. I guess FRT will be granted 100% with this gun we will not harm anyone except us if it goes to parts
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I was first who gets order of UNG-12 from UZKON. My first test was two bullpups destroyed receivers after 10 shots
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of 12/76mm 53g ammunition it was freeze weather. Than UZKON send me some upgraded receivers. I was trying to assemble first shotguns with this receiver but barrell did not fit. Another two was changed and after first shot both of them stucked in rear position and i was unable to push bolt forward. I decided to make this video test of another 10 pcs to show you what UZKON want to sell you.
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he sent the receivers in Twice!

this guy obviously bought a #### ton of them for outfitting his company and they were not living up to expectations
 
Well you can see the square end on the receiver, thats far from ideal. That will be/ is a problem spot. My derya mk10 has a full rad back there. Also i wonder if they were hand loads or if the rifles had a lubed chambers im pretty sure a normal person shooting one of these would not have the failures that guy had. Its like he set that up. I read all the time about the deryas having cycle problems its in every review. Turns out mine fired over 600 rounds low brass cheap target loads no issue. All in how you use it( i can make the bolt stick too if i pound the mag into the closed bolt with about 20 times the force needed to seat the mag). Im sure i can make it fail if i try, and also load rounds to cause failers ( no power or spent primer or way to hot)

I wouldnt buy one my self. But after reading reviews of rifles i own my self. Ive learned to take any reveiw with a grain of salt. 75% of reveiws are pushing an opinion not a product.
 

Check out the vid at the 41:20 mark
The guy shows that if you slam in the mag, it will lock up. I recall this is a common "behavior" of all of the Turkish shotguns using this same action/design.

But the point about the square ends and cracks... Makes me concerned.
 
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