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Problem with MP5 Clone

3128 Views 20 Replies 11 Participants Last post by  MickeyD
Hello HK PRO,


Update: Zenith has made this right and I'm 100% happy with their customer service. They have gained a customer for life.


I recently purchased a SP5K and quickly was bitten by the rollerlock bug. After researching online about MP5 clones I decided to purchase one of the more well touted imported clones. I'm planning on doing form 1's on both the SP5K and the clone, but after I received the clone I found a defect on the gun that was concerning.

There is a small dent in the inside of the roller channel. I sent the gun back to the manufacturer for warranty inspection and I was hoping for a replacement. After spending $2000 on a firearm I expect a certain level of quality. The manufacturer contacted me and said I will never have any issues with this gun and that it was a tool mark that won't cause any issues.

I'm well versed on the AR15 platform, but I'm still learning about rollerlocks. I know there are many smart people on Hk Pro when it comes to the MP5 platform so I wanted to get some additional opinions on it.
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If the bolt slides freely back and forth it shouldn't be a problem, but I wouldn't be happy with the dent in a new gun. It doesn't look like a tool mark to my untrained eyes.
Hello HK PRO,

I recently purchased a SP5K and quickly was bitten by the rollerlock bug. After researching online about MP5 clones I decided to purchase one of the more well touted imported clones. I'm planning on doing form 1's on both the SP5K and the clone, but after I received the clone I found a defect on the gun that was concerning.

There is a small dent in the inside of the roller channel. I sent the gun back to the manufacturer for warranty inspection and I was hoping for a replacement. After spending $2000 on a firearm I expect a certain level of quality. The manufacturer contacted me and said I will never have any issues with this gun and that it was a tool mark that won't cause any issues.

I'm well versed on the AR15 platform, but I'm still learning about rollerlocks. I know there are many smart people on Hk Pro when it comes to the MP5 platform so I wanted to get some additional opinions on it.



what brand did you buy ? i can relate to your post, i got my sp5k just before christmas . ran 240 rds through it last weekend, love it and want some more of it !

i've been looking at buying the Z-5RS . but i agree with you 100%, for the money you spent i would expect a little bit better quality and CS.
Is there a symmetrical mark on the other side?

If you feel the inside bearing area of the rail, is it noticeable? rough? Pushing inward?

If the answers are no, you will probably have no issue at all with it and it is cosmetic only.

Not saying that it deserves to be there at all, just calling it what it actually is.
If the bolt slides freely back and forth it shouldn't be a problem, but I wouldn't be happy with the dent in a new gun. It doesn't look like a tool mark to my untrained eyes.
Agreed....It should not have that obvious a dent. Unfortunate they won't make it right with no questions asked, If I may ask, which manufacturer?
Looks like someone dropped something onto the flat before it was bent. Not a roller mark. Agree you will never have a problem with it. I wouldn't sweat it but to each their own. If it bugged me enough I'd hit it with a punch and hammer to even it out but that would mar the finish in that spot and need touched up or a refinish. Life is simply too short.
Is there a symmetrical mark on the other side?

If you feel the inside bearing area of the rail, is it noticeable? rough? Pushing inward?

If the answers are no, you will probably have no issue at all with it and it is cosmetic only.

Not saying that it deserves to be there at all, just calling it what it actually is.

Thanks for all the opinions folks. Yes there is a noticeable mark on the inside when I run my finger across it, however the carrier moves freely when charging it. I haven't fired it yet. My main concern is that it will get worse with usage, cause malfunctions, or prematurely wear out parts. Plus aesthetically it bugs me as this wasn't a cheap purchase.
Agreed....It should not have that obvious a dent. Unfortunate they won't make it right with no questions asked, If I may ask, which manufacturer?

It's a Zenith Z-5RS. Nice guys and I believe they are a site sponsor so I was hesitant to post the brand. Agreed I thought they'd replace as it's an obvious defect in the craftsmanship. It will bug me and I thought about selling it and buying another one, but in good conscience I can't sell it to anyone without pointing it out to them which will turn off any potential buyers.
It's your firearm, and you have to do what you think best.

Personally, I'd be getting a hold of someone there tomorrow morning and press them to make it right. You paid a lot of money for that firearm and should not have to have the back of the mind worries you've expressed. Get a hold of Chase at Zenith, he was in the last Advanced class I went to at Teufelshund Tactical, seemed like a real good guy. Contact him, express your concerns, see what they will do.
Maybe start a thread on every gun forum? Not advocating trouble, just trying to help op.
Maybe start a thread on every gun forum? Not advocating trouble, just trying to help op.
Thanks. I'm just gonna try to talk with them again and explain my concerns. They said they would extend my warranty for an additional year to six years, but I'm doing a form 1 on this gun and will be using a trigger pack so if something does happen at that point a new gun won't help much. They seem to have many happy customers so I don't want to post on a bunch of forums. I did post on another popular forum, but got zero feedback from the members there as it's not a HK specific website.
The carrier is getting hung up and the rollers are trying to engage outside the trunnion. I had this issue on a home build, the cause for me was the shell deflector was hanging too low and caused the carrier to get hung up.. It's actually bad and can cause catastrophic failure if it's not addressed.
The carrier is getting hung up and the rollers are trying to engage outside the trunnion. I had this issue on a home build, the cause for me was the shell deflector was hanging too low and caused the carrier to get hung up.. It's actually bad and can cause catastrophic failure if it's not addressed.

Are you saying that's what caused the dent? Thanks.
Are you saying that's what caused the dent? Thanks.
Without it being in front of me, it's likely the cause. See if it hangs up on shell deflector. Keep in mind you need to put upward pressure on it. Outward dents on rail are bad news.
This does not look like a roller dent to me since as it is not uniform across the width of the rail. It looks more like a cosmetic issue rather than a functional one from what I can see in the pics since you reported that the carrier doesn't hang up in any way.

However It would bother me too since its a new gun and you paid full boat for it.
I don't think the question of whether a corresponding 'roller mark' exists on the left side of the firearm. Can we get a pic of the other side?
I don't think the question of whether a corresponding 'roller mark' exists on the left side of the firearm. Can we get a pic of the other side?

Zenith has taken care of the issue and far exceeded my expectations. They've gained a customer for life.
Zenith has taken care of the issue and far exceeded my expectations. They've gained a customer for life.
What was their resolution to the problem?
What was their resolution to the problem?
Yeah, he kind of forgot the most important part.
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