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Posted: 9/9/2007 10:47:54 AM EST
i just bought a clone MP5 and out of 150 rounds i had 4 double feeds and 5 FTE.


what causes this?

the gun is brand spanking new and this is the first time i've shot it.

i didn't clean the gun before useing it. could it be a lubrication problem?

also i was using federal american eagle. is this one of the no-nos on the gun?



update: 10/23 i hav put about 1k through the gun and cleaned it twice still 3-5 FTF FTE per mag. what parts should i change

thanks
shawn


UPDATE 1/18

all parts changed out still double feeds every 3-5 rounds with straight and curved mags, also have used faccoci (sp), umc, winchester, american eagle, blazer, and magtec ammo

anybody know a good smith?
brownells
Link Posted: 9/9/2007 10:52:39 AM EST
[#1]
Could be mags to extractor spring but try a break in period first .Shoot it more,After 400 rnds get back to us.
Link Posted: 9/9/2007 2:21:29 PM EST
[#2]

Quoted:
i just bought a clone MP5 and out of 150 rounds i had 4 double feeds and 5 FTE.


what causes this?

the gun is brand spanking new and this is the first time i've shot it.

i didn't clean the gun before useing it. could it be a lubrication problem?

also i was using federal american eagle. is this one of the no-nos on the gun?


Never shot one of those, but it is generally a good idea to clean and lube any gun before shooting it for the first time.
Link Posted: 9/9/2007 2:40:06 PM EST
[#3]
The ammo was not on the list.

The list (as printed on an 8x10 red sheet of paper) reads exactly as follows:

"!!!!!!!!!!Warning!!!!!!!!!!
The following Ammunitions should NOT be used in this weapon:
Winchester white box from Wal-Mart
Remington UMC
Blazer
Surplus Ammo
Reloads
WILL VOID LIFETIME WARRANTY"


I would clean it first and try again, just to take that variable out of the equation. I've not had any problems with my CA-94.
Link Posted: 9/9/2007 3:48:52 PM EST
[#4]
A little off topic but why should WWB void the warantee.  To me if I knew I couldn't use WWB I would pass on the firearm.  

CMS
Link Posted: 9/9/2007 4:35:22 PM EST
[#5]
because WWB is dirty ammo, i know that just from my glock
Link Posted: 9/10/2007 11:15:57 AM EST
[#6]
FWIW, i've used Winchester white box from Walmart and UMC and both worked just fine.  The only difference I noticed, was the white box was barely powerful enough to cycle the action.

Steve
Link Posted: 9/10/2007 1:04:17 PM EST
[#7]
Its not the ammo. Ive fired several cases of Federal American Eagle thru my HK MP5K. Ive fired the no no stuff too with no problems. The MP5 and MP5Ks are not finicky systems. CA and SW guns are known for using improper springs, often substituting G3 springs. Replace your springs with HK products and it should run fine.
Link Posted: 9/10/2007 3:33:30 PM EST
[#8]
Sniff, sniff.... Smell that? That's the stench of Todd Bailey. Thats why the gun does not run.
Link Posted: 9/10/2007 4:10:38 PM EST
[#9]

Quoted:
Its not the ammo. Ive fired several cases of Federal American Eagle thru my HK MP5K. Ive fired the no no stuff too with no problems. The MP5 and MP5Ks are not finicky systems. CA and SW guns are known for using improper springs, often substituting G3 springs. Replace your springs with HK products and it should run fine.


which springs should i look into replacing?


thanks for all the info guys.


i'm going to clean it and try again
Link Posted: 9/10/2007 6:14:35 PM EST
[#10]

Quoted:
A little off topic but why should WWB void the warantee.  To me if I knew I couldn't use WWB I would pass on the firearm.  

CMS


Look here.
Link Posted: 9/11/2007 5:21:11 AM EST
[#11]
Link Posted: 9/12/2007 3:51:55 PM EST
[#12]
Link Posted: 9/12/2007 4:45:01 PM EST
[#13]

Quoted:
there is a thread on the ammunition section that shows a WWB squib that blew a barrel (here).  so its a good call.   go here www.hkparts.net buy a HK ejector, HK extractor and spring.   buy a real HK mag, i bet the problems go away.   try Euro ammo like S&B, Fiocchi, or Prvi.vthey generally load it hotter and it will run better.   Wolf actually runs perfect in mine (actually everything runs well in mine).    


hey thanks for the info bryan thats exactly what i;m looking for


as a side note are the ak74's still in stock over there i'm looking to pick one up here soon?\



thanks
shawn
Link Posted: 9/12/2007 7:29:13 PM EST
[#14]

Quoted:
there is a thread on the ammunition section that shows a WWB squib that blew a barrel (here).  so its a good call.   go here www.hkparts.net buy a HK ejector, HK extractor and spring.   buy a real HK mag, i bet the problems go away.   try Euro ammo like S&B, Fiocchi, or Prvi.vthey generally load it hotter and it will run better.   Wolf actually runs perfect in mine (actually everything runs well in mine).    


If you re-read that thread, you'll notice that he isn't even positive that it's WWB as he had a bunch of loose ammo in a .50 ammo box. There are also quite a few people in that thread stating that they've never had any problems using WWB even over thousands of rounds (myself included). It's not top of the line by any means, but there's no reason it shouldn't function.

Your best bet is to start replacing parts with the kosher HK stuff. And try to stay away from anything that Bailey had anything to do with in the future.
Link Posted: 9/20/2007 12:05:40 AM EST
[#15]
The crap you read on the internet.

WWB is the standard for plinking ammo and is good quality and NOT DIRTY!
Link Posted: 9/20/2007 12:43:53 AM EST
[#16]

Quoted:
The crap you read on the internet.

WWB is the standard for plinking ammo and is good quality and NOT DIRTY!



+1
Link Posted: 9/20/2007 12:58:07 AM EST
[#17]
A delayed blowback system depends on a certain amount of pressure to work.

Find some factory ammo that is hot enough and feeds reliably and STICK with it
.
Link Posted: 10/23/2007 6:12:46 AM EST
[#18]
BTT
Link Posted: 10/23/2007 6:51:25 AM EST
[#19]
Shawn,
I just bought a Coharie CA94. I have put over 300 rounds through mine without
a hiccup.

I shoot either Sellier and Bellot or Fiocchi brand 115 grain FMJ ammo.
Of the two brands, the Fiocchi seems a little "hotter" than the S&B.

I only use H&K german made mags. (I've never even attempted to use the mag that comes with the gun because I have read many times that the cheap mags are a major cause of malfunctions with these guns.)

I clean the rifle spotless clean before and after each shooting session paying close attention to the fluted chamber and bolt carrier, and I lube all moving parts with a light coat of CLP.

This has been my recipe for success.

My best advice is to clean and lube the gun thoroughly.

Buy at least one H&K manufactured magazine.

Buy a box or two of Fiocchi ammo, and go back to the range.

That should solve your problem. If not, I would call Adam Webber at HKparts.net or Gordon Miller at HKspecialist.net and start by replacing your extractor and extractor spring with HK german parts.

Also, go to HKpro.com and get registered. There is alot of good info over there
and several people there own these Coharie clones. Most problems with these guns are
normally not too expensive to fix yourself.

Hope this helps, and hope your gun runs like a well oiled machine soon.
I have been very happy with mine so far.



Link Posted: 10/23/2007 6:51:31 AM EST
[#20]
Link Posted: 10/23/2007 7:06:16 AM EST
[#21]

Quoted:
there is a thread on the ammunition section that shows a WWB squib that blew a barrel (here).  so its a good call.   go here www.hkparts.net buy a HK ejector, HK extractor and spring.   buy a real HK mag, i bet the problems go away.   try Euro ammo like S&B, Fiocchi, or Prvi.vthey generally load it hotter and it will run better.   Wolf actually runs perfect in mine (actually everything runs well in mine).    


Fiocchi is not Euro ammo, the factory is in my back yard.
Link Posted: 10/23/2007 8:02:41 AM EST
[#22]
Link Posted: 10/23/2007 9:10:37 AM EST
[#23]
Have any pics you would share?
Link Posted: 10/23/2007 9:52:24 AM EST
[#24]

Quoted:
Have any pics you would share?


i'll try to get to the range tomorrow and take some pics
Link Posted: 10/23/2007 6:45:57 PM EST
[#25]
I had the same issue with my BW5 and they bobcat sent me a free spring which fixed the problem. Ever since it eats anything I throw at it even very long soft loaded reloads. My only problem I have had since was at a match when I was on my side shooting between barrels and the brass bounced out of the ejection port off two barrels and back into the ejection port as I fired the next round. It was a 1 in a 1000 but it continued to shoot 5 more rounds before getting a simple jam.

As for WWB I have seen one squib load from the factory.
Link Posted: 10/27/2007 11:49:25 AM EST
[#26]

Quoted:
I had the same issue with my BW5 and they bobcat sent me a free spring which fixed the problem. Ever since it eats anything I throw at it even very long soft loaded reloads. My only problem I have had since was at a match when I was on my side shooting between barrels and the brass bounced out of the ejection port off two barrels and back into the ejection port as I fired the next round. It was a 1 in a 1000 but it continued to shoot 5 more rounds before getting a simple jam.

As for WWB I have seen one squib load from the factory.


what kind of spring did they send you?


and the one i have is coharie will they send me a spring if i call them?


thanks
shawn
Link Posted: 10/27/2007 1:41:20 PM EST
[#27]
I would treat your CA like a BW.  Replace the extractor spring, and use curved mags.
Link Posted: 11/5/2007 7:08:24 AM EST
[#28]
shawnofthedead - I just picked up a CA89-fullsize myself.  It will not run reliably with the mag it came with.  Runs like a champ with German HK curved mags though.  BTW, I have not changed out any of the usual offending parts.  Just get some real HK mags and give them a try.  Good luck.
Link Posted: 11/5/2007 7:49:38 AM EST
[#29]
From what I have read here on the forums, most if not all of the Coharie Arms guns now come with what appears to be the correct 9mm hammer spring.  I think this is the reason that most purchasers are having better luck with their guns then the BW5s that were equipped with .308 hammer springs.  It's hard to tell what the gun is equipped with unless you have both, 9mm and .308, springs out of the gun to compare them.  Seems to be the most crucial parts combo to have in place is: correct hammer spring, correct extractor spring, correct ejector lever, and a quality HK mag.
Link Posted: 11/5/2007 4:41:42 PM EST
[#30]

Quoted:
shawnofthedead - I just picked up a CA89 myself.  It will not run reliably with the mag it came with.  Runs like a champ with German HK curved mags though.  BTW, I have not changed out any of the usual offending parts.  Just get some real HK mags and give them a try.  Good luck.



where can i get real HK mags? i see a few for sale but they are not original hk



thanks
shawn
Link Posted: 11/5/2007 4:55:04 PM EST
[#31]
MP5 Mags:

Here!

and Here!

Link Posted: 11/5/2007 5:08:12 PM EST
[#32]
from my post over on HKPro:


I took the SW5 SBR and CA89k out to the range yesterday. The SW5 has the 9mm hammer spring conversion in it and the CA89k came with what appears to be a 9mm spring. Anyway, we were shooting the following:

Blazer, Brass ($8/50 at Walmart)
UMC, Brass ($8/50 at Academy)
S&B, Brass ($8.50/50 at gun show)

All 115 grain.

Both the Blazer and UMC discharged the casings about 5' out of the guns (either gun). That seemed to cycle them adequately. The S&B had a bit more of a kick to it and discharged the casings twice as far (about 10'). The cycling on this felt real good and solid. I had two other guys with me and had them watching the difference is discharge energy/distance. They were amazed at the noticeable differences.

No squibs on any of the rounds but I think it's safe to say that I'll be sticking with the S&B stuff for rapid fire.

Edit: There were two rounds, while I was watching, that barely came out of the gun. They were both the UMC stuff.



Even the MP5 owner's manual (or armorer's manual) states to NOT use low power ammo. These things are NOT handguns with simple slide recoil systems. My SW5 has an HK extractor spring, extractor, and 9mm hammer spring. It runs the cheap ammo much better after changing the .308 hammer spring.

Sean, the newest CA89 guns have a 9mm hammer spring. Well they supposedly do if they have the newest metal pack. My recently purchased (from the factory) CA89k pistol does anyway. But if you want to check yours out and then need to change it, go read my detailed instructions over on HKPro:

hkpro.com/forum/showthread.php?t=65232
Link Posted: 11/6/2007 7:09:03 AM EST
[#33]

Quoted:
MP5 Mags:

Here!

and Here!



You can try both places, but I called them last week and both had none.  I ended up buying 5 from someone on HKPro for sale forums.  Best bet is to look for used ones on the EE here at ARFCOM, at HKPro or at Sturmgewehr.  

BTW, went to the range this morning and again verified that mine runs great with the HK mags but won't run at all with the SW/TWTA/BCW/TB/CA/POC mag it came with.  Can't wait for my Form 1 to come back so I can get a stock for the thing.
Link Posted: 11/6/2007 5:21:35 PM EST
[#34]

Quoted:

Quoted:
MP5 Mags:

Here!

and Here!



You can try both places, but I called them last week and both had none.  I ended up buying 5 from someone on HKPro for sale forums.  Best bet is to look for used ones on the EE here at ARFCOM, at HKPro or at Sturmgewehr.  

BTW, went to the range this morning and again verified that mine runs great with the HK mags but won't run at all with the SW/TWTA/BCW/TB/CA/POC mag it came with.  Can't wait for my Form 1 to come back so I can get a stock for the thing.
Both my SW5 SBR and CA89k seem to work fine with the straight mags. And you can get them for $18-$28 at cole distributing, slightly used.

coledistributing.com/

Link Posted: 11/6/2007 5:36:41 PM EST
[#35]

Quoted:
The ammo was not on the list.

The list (as printed on an 8x10 red sheet of paper) reads exactly as follows:

"!!!!!!!!!!Warning!!!!!!!!!!
The following Ammunitions should NOT be used in this weapon:
Winchester white box from Wal-Mart
Remington UMC
Blazer
Surplus Ammo
Reloads
WILL VOID LIFETIME WARRANTY"


I would clean it first and try again, just to take that variable out of the equation. I've not had any problems with my CA-94.
Damn sounds like there is no ammo to use then. Sounds like a spring issue to me in the gun.
Link Posted: 11/6/2007 6:11:55 PM EST
[#36]
I managed to shoot WWB out of a dealer sample HK mp5 (on full auto), the gun had not been cleaned in the year and a half since he had gotten the gun and I did not have one hiccup while playing with it.
Link Posted: 11/16/2007 3:18:42 PM EST
[#37]
ok i've changed out the ejector and ejector spring, bought new Hk mags and took it out to the range today


so now rather than jamming every 6-10 rounds it now jams every 3 rounds


wiskey tango foxtrot

anyone know any good hk armors that i can send this thing to so it can possibly be fixed?


thanks
Link Posted: 11/16/2007 5:32:06 PM EST
[#38]
Shawn,

Just to get things strait, you DID get all "usual" replacement springs and things and also picked up German curved mags?

With that being answered, what EXACTLY happens now? Do you get a FTE or FTF? If FTF, I talked to a guy a few months back that had to get a FA bolt, but that's $475.

Talk to Jayson at IGF. His website is www.investmentgradefirearms.com

It's going to run you money, either way you look at it...

What ammo you using?

Brock

Link Posted: 11/17/2007 8:07:11 AM EST
[#39]

Quoted:
Shawn,

Just to get things strait, you DID get all "usual" replacement springs and things and also picked up German curved mags not curved but straight hk mags?

With that being answered, what EXACTLY happens now ?the gun will jam FTE two rounds will get jammed in the chamber or there will be a round stuck on the top of the gas tube Do you get a FTE or FTF? If FTF, I talked to a guy a few months back that had to get a FA bolt, but that's $475.

Talk to Jayson at IGF. His website is www.investmentgradefirearms.com

It's going to run you money, either way you look at it...

What ammo you using? umc mega packs, american eagle both had problems

Brock





edit cuz i cant speel
Link Posted: 11/17/2007 2:04:31 PM EST
[#40]

Quoted:

the gun will jam FTE two rounds will get jammed in the chamber or there will be a round stuck on the top of the gas tube


Ding ding ding......Well there's your problem. Someone put a gas tube in your gun.
It's not supposed to have one. Remove it and all should be well.
Link Posted: 11/17/2007 5:01:03 PM EST
[#41]

Quoted:
ok i've changed out the ejector and ejector spring, bought new Hk mags and took it out to the range today


so now rather than jamming every 6-10 rounds it now jams every 3 rounds


wiskey tango foxtrot

anyone know any good hk armors that i can send this thing to so it can possibly be fixed?


thanks


you need to change the extractor... and extractor spring...
Link Posted: 11/17/2007 7:47:16 PM EST
[#42]

Quoted:

Quoted:
ok i've changed out the ejector and ejector spring, bought new Hk mags and took it out to the range today


so now rather than jamming every 6-10 rounds it now jams every 3 rounds


wiskey tango foxtrot

anyone know any good hk armors that i can send this thing to so it can possibly be fixed?


thanks


you need to change the extractor... and extractor spring...


yep it's the extractor and possibly the extractor spring as well. The extractors are slightly out of spec.

Pull the bolt out of your gun and slide a cartridge under the extractor. does it have any wobble? is it holding the cartridge tight to the bolt face?
if not it's the extractor
Link Posted: 11/17/2007 9:10:16 PM EST
[#43]
Alternatively, partially retract teh bolt, and try to wiggle the extractor.  Should be no movement if done by finger.
Link Posted: 11/18/2007 5:53:33 AM EST
[#44]

Quoted:

Quoted:
ok i've changed out the ejector and ejector spring, bought new Hk mags and took it out to the range today


so now rather than jamming every 6-10 rounds it now jams every 3 rounds


wiskey tango foxtrot

anyone know any good hk armors that i can send this thing to so it can possibly be fixed?


thanks


you need to change the extractor... and extractor spring...



sorry

i've changed the extractor and spring. it was a hell of a tight fit and now i'm trying to change the ejector here



thanks

Link Posted: 1/18/2008 7:20:28 AM EST
[#45]
btt
Link Posted: 1/18/2008 8:09:50 AM EST
[#46]
I would try to debug it for you but I live in Houston TX. Where are you at?
Link Posted: 2/4/2008 8:33:31 AM EST
[#47]
btt
Link Posted: 2/4/2008 4:56:43 PM EST
[#48]
I have a coharie gun as well. When mine started giving me issues I called up Coharie and shipped it back to them. Later Todd called me and asked me specifically what my symptoms were. He fixed it for me and it has run like a top ever since. When you ship it back though, make sure you have only original parts in the gun. They say that non-original parts will void the warranty. Both Todd and Wendy were super nice to me on the phone. People have said lots about them; but my dealings with them, while limited, were very pleasant. If its a new gun, its under warranty; give them a chance to fix their gun. They seemed eager to make it work. I tried switching parts too and never got things quite right, since their fix I haven't had any issues.  
Link Posted: 2/5/2008 8:28:16 AM EST
[#49]

Quoted:
I have a coharie gun as well. When mine started giving me issues I called up Coharie and shipped it back to them. Later Todd called me and asked me specifically what my symptoms were. He fixed it for me and it has run like a top ever since. When you ship it back though, make sure you have only original parts in the gun. They say that non-original parts will void the warranty. Both Todd and Wendy were super nice to me on the phone. People have said lots about them; but my dealings with them, while limited, were very pleasant. If its a new gun, its under warranty; give them a chance to fix their gun. They seemed eager to make it work. I tried switching parts too and never got things quite right, since their fix I haven't had any issues.  


would you happen to have a number where i would be able to reach him?

thanks
Link Posted: 2/6/2008 7:35:49 PM EST
[#50]
I would try emailing Wendy Bailey first, she's usually pretty good about getting back to people.
[email protected]
If that doesn't work try calling Coharie's number
480-830-5652
I usually left a message and she would call back in a day or so.
If you tell her the symptoms she will probably have you ship it back to them. They get all mad if you say yo were switching out parts and stuff like that. I would minimize that part or leave it out. She should take care of you.
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