Still can’t believe, that BG intentionally sells fake Nitecore flashlights. But checking the different knurling and not that fine machining, I’m in doubts now…
I took a look at what I’m thinking is the Nitecore site flashlight.nitecore.com and there is one picture in the MT10A section that has a longer clip like yours. It’s the one where the flashlight is sitting on a rock. That flashlight has different lettering than yours. Maybe Nitecore recently switched manufacturers? Back when they were having problems with counterfeit chargers they had a site where you could enter the serial number (or was it the number in the hologram on the outside of the package?) and it would tell you if the charger was legit.
Okay I’m in a rush now, really have to go to attend the dinner party but I can’t wait about this so I took quick picture of the driver.
I can’t really tell the differences but the printlane (is that how it’s called?) on mine is bit vague. What do you guys think?
I found this picture from https://m4dm4x.com/review-nitecore-mt10a:
Mine:
I think if they’re going to all the trouble to make a fake driver board that matches so well, then it’s probably a pretty good fake overall! 
It doesn’t look exactly the same, but it is very close? Look at the machining marks around the nudge in the ring, even they match up?
It’s Sysmax I don’t trust. I bought a factory sealed D2 charger with the authenticity sticker that checked out correct. Inside the box was a plastic battery case that said “Xtar” on it. I think these companies who do machining, driver boards, packaging, etc… are intermingled quite a bit. Probably not hard to buy a few hundred nitecore driver boards from the electronics company who made them. Especially if Nitecore didn’t claim all that were made, and the company wanted to dump them.
I’d bet the hosts were Nitecore rejects, and someone assembled them to dump off on the gray market. Who better to dump them off to than Banggood, Gearbest, & Fastech. Nitecore doesn’t recognize BG, GB, or FT as authorized sellers anyway, and will not warrant if purchased from those sellers.
RobertB - That looks like Slim Pickins’ from Doctor StrangeLove
It is, lol… Dr. Strangelove is one of my favorite movies, along with Young Frankinstein.
The clip looks like my clip that comes with the EC11. This one as far as I know is authentic. Came from Longhorntactical, a US based seller.
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The lighting makes the color of your first pic look off (brownish). I noticed the black lanyard string also looks sort of brownish.
Me taking a close look at mine, the machining looks spot on, at least the head.
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The bezel doesn’t come polished, I gave it the Caustic soda treatment and polished. I just had to add some bling to the light. 
Same here -
What Hump?
I also bought an MT10A in December 2017. I bought it from Battery Junction, a reputable retailer, I think? The clip and the lettering are identical to yours. The clip is slightly too long, and the writing only says MT10A. I examined my box for spelling or printing errors and it looks fine. It has worked perfectly and I’ve had no problems at all. Maybe we both got fakes, or we both got genuine. Overall, I’m pretty happy with it. (except the tint, now that I know better) I can upload a pic later if you like.
It isn’t a fake, this just seems like they decided to use the same clip from other flashlights on this flashlight and it doesn’t fit well.
The images all say that the actual product may vary from the renders, so technically they are right and have no reason to give you a refund or replacement.
I would suggest contacting nitecore directly and explaining your issue to them.
That clip doesn’t fit, I would have an issue with it as well. Return the light for a refund.
There may be a reason why Nitecore changed it to a clip that doesn’t fit. The head looks quite a bit thicker than the body tube, and if the original clip rested on the body tube just below the head, it could be difficult to use. Trying to work a pocket into that clip, if it required you going around the head first, might have caused too many issues.
Maybe they used a longer clip that stuck out on the head, so that it would be easier to shove into a pocket.
It might work better, but I agree it looks a lot more ugly.
The radius on the bend needs to be larger so that the clip is straight when resting on the head.
I agree with Enderman, contact Nitecore.
And if it’s a fake, start a PayPal dispute.
the engraving, look so poor
i bet it’s fake
The color is just from the lighting, I took that picture with my phone. In real it’s really black. About the knurling I don’t enough to be able to tell. The UI in particular the shortcuts to Turbo, red light, to check the voltage etc all works how it’s suppose to be. The box looks real to me compared to my EC21 box.
I had look around for that serial check online but that’s only for charger, I can’t find it for flashlights.
Remarkable that Greenlight also bought one around the exact time I also bought and we both have the same only MT10A marking on the side. Somehow it’s bit of comfort to know I’m not the only one because I’m starting to doubt it’s a fake one.
I’ll send a mail to Nitecore to see what they’ve got to say about this.
How much you pay for it? Sometimes it is reject goods selling at very low price. So they are printed not similar to premium goods and might put a inferior clip on this one.