Very disappointed with the quality. Overall it's okay but it seems that whatever measurements were used for the 3d printed parts are all slightly off, so that the rear sight holes are too small to fit the sights into and the whole for the front body pin isn't properly aligned with the lower receiver making it impossible to fully insert the pin. Because of these I will likely have to take a dremel to my brand new upper and risk destroying it simply so it will function as intended. Further, he front sight post being made of metal is nice, however that is overshadowed by the fact that the hole is too big for the fiber optic element to fit snug, and it would require adhesive to ensure it doesn't just fall out. Not to mention the carbon tube rattles in the 3d printed base. The reputation of airtac led me to believe that my hard earned $150 would be going towards a nice, high quality part that would be easy to install, however it seems that this is not the case. Very disappointing.

I love the look and weight.

I ordered just an original style matte black CRBN upper & got this instead with cool cutouts. I know it’s made for g&g and lancer tactical lowers, I was hoping it would fit my classic army lower but it didn’t lol. So now I can’t wait to finish the build

Perfecto

Sent wrong stuff

Doesn’t fit g&g combat machine very well

I can't recommend this enough! It's the lightest upper on the market by far, coupled with the best customer support and a lifetime warranty on its parts. I was fortunate to be one of the few who got the limited version in extreme airsoft green. I'm really hoping I can also get a tracer in the same limited green just to enhance the build even further. I would rate this product 1000/10 and would recommend it, along with other products such as the Maxx blacked-out hop-up unit and their inner barrel. I can't wait to see what else Airtac has in store, but judging by their Discord, it's going to be insane.

Awesome construction, basically weightless. A must-have for anyone going for a super light build

Awesome super light and smooth had trouble putting my HopUp in but once I did it working amazing

Loved the hpa upper it’s so light

These uppers are very light and it transforms your build! I couldn’t resist and had to build two!

I can honestly say this is, THE best upper in the game. I’m lucky I got the limited edition forged carbon upper because it sold out FAST. It’s outstanding quality, amazing feel and comfort paired with exquisite fast target acquisition. In the lightest setup. Just the best upper in the game don’t settle for less buy the best.

Super lightweight and compact! Love the upper

Love my gen3 HPA upper, very lightweight, streamlined design, and the dual hop up windows are a plus! It’s also very flickable so you can achieve those nasty 1 ball snap shots!

Best and lightest upper on the market!

Has really rounded out my build. My second carbon upper and im just as impressed!

Beautiful and very light.

This thing is so nice I can’t wait to get this build done and take it to the feild!!!

It's so good pew pew

This thing is so light, compared to others this is 2 lbs depending on the lower , engine, and grip. Mine’s about 2 pounds without the tank which is a game changer, carbon fiber is strong as hell taking beating from diving and hitting the Doritos. Love it Airtac #airtacfam

The iron sights broke

Just make sure to get a CRBN gearbox

Love this item the only problem I have is my rear sites broke after one use 

Best upper you can possible buy

It’s nice came a little latter then normal but customers service answers to email same day.

Came with issues and didn’t have a screw attached. Now I have fitment issues and can’t align the carbon with the upper to fit the screw in

I have greatly enjoyed the experience using my Carbon upper. The build quality is superb and the fitment is exactly as described even though I’m not using the proper combat machine lower. This upper was a real head turner at the feild and had people questioning why it was outranging them. Paired with the AirTac F2 this build was a formidable fast replica that has become one of the favourites of my collection.

Fells great in hand

Bottom part is made out of plastic but the tube is high quality.

Many of my buddies use an Airtac upper and it feel nice to use. This paired with a slightly weighted lower is amazing. I’d recommend getting one.

I own 3 155mm and 1 128mm, I absolutely love these uppers. Their performance, durability, light weight, and appearance are all stunning. I recommend these uppers to everyone. My tournament setup of choice every time without question.

Very lightweight and looks great. Plenty of compliments at the field

So clean I only worry about plastic threads

最高です！ これから組み込みます！

Amazing product. Love it cheers fellas

love it and thinking about getting another one. cheers fellas

Very nice upper. Love it.

It‘s Building Time ! Top Quality and Color.

Franchement rien a dire c'est du bon matériel

I love all of the crbn uppers. I’ve been patiently waiting for the 185mm and I’m happy that it’s finally here

Fit with no issues or tweeking fast shipping

Easy to install fast shipping

I buy these all the time. They are always in great packaging and never one issue. Along with great customer service. super fast shipping.

Had some issues initially with the figment but met the guy in person and he was very helpful

great customer services and a great item overall

Awesome stuff

There isn’t one thing i don’t love about this upper, comparability could get annoying but not for me. Amazing product!

came in perfectly 3rd package this from airtac but paid for the over night got it 3 days later but I’m assuming It’s mailing prob

If you want a nice looking upper I would 1000% recommend this one, it would go great with the monk customs esg.

I love the crbn upper its light durable and it looks good too definitely would recommend

Looks very sleek and fits nicely

Words cannot express how much I love this upper, if you want a extremely light gun, and a simpler gun design this is for you.

Love it,best upper you can buy

It's beautiful

High-quality and looks great. A must-have for high-speed and low-drag!

Best thing I’ve ever bought