[Set] BY-817 11" Assault Rifle Replica - Black [Double Bell] + VictOptics SRD 1x20 collimator sight - black [Vector Optics]

Looks amazing, super clean and realistiq, caps fit great adjustment system works great(clicks are very noriceble) easy battery installement, the front and back cap close easily wich is not the case with all red dots high quality materials used, def. Worth the money.

I really like the externals, very solid and very clean looking. Honestly that's all I cared about as I was gutting most the internals and building a solid ssg. The gearbox had some excellent compression pieces that are similar quality to maxx, with the cylinder head being something I'd change. The gearbox was pretty beefy and felt very solid but thats all I can speak on how structurally sound it is. The gears and trigger contacts were what you'd expect and nothing too exciting, but I was surprised to see 8mm bearings instead of solid bushing. I still can't say I wouldn't change them or not if you're doing internal work but they seem good enough. My main problem comes from the gearbox shell, specifically where the spur gear is. You will need to remove material from the shell to use your own gears. Now this may only be with rocket 13:1s or all but this can be a minor annoyance. More than likely you have a rotary tool/dremel laying around to easy solve this problem yourself. All in all this is a very solid body to use with some surprisingly good internals for the price tag. I would get this for a cheaper alternative than the VFC version, but if you don't plan on upgrading it then don't expect similar performance out the box. Think of it like a stock king arms or maybe the tier below cyma's platinum line. Other than my small gripe, I would recommend this gun.

That rifle became to my favourite one after the first shots.
I think the best about it is the iron sights. In flip down position they just not disturb you, and if your red dot or collimator have an issue, you can just flip them up, and they enough high to comfortably aim without breakin your neck.
Another good thing is the two side mag release button, which could make the mag change more tactical and quicker in any situation.

There were two probelms: one of them was the dust cover, that made by really weird plastic and most of the time it did not opened if I wanted to change the hop up's position. Other one was the rear iron sight. It have been curved really bad, maybe by the cheap carboarding, but I zeroed it anyway, it's not perfomed really well on longer ranges.

The optic is great the picture is a little darker but not that noticeable if not in the dark. There are many brightness options, but adjusting it is a little confusing at first. The only problem I found is the mounting system it didn't really fit on my gun(UTR 45) but I saw a lot of issues with the m-lok and the top rail with it, and all I had to do was tighten the side nut to get it to fit nicely.

This is absolutely amazing AEG, especially taking into account very affordable price. One of the best value for money acsilable on the market if you seaexh for AR/416 platform.

Pros:
+ Good quality of metal body
+ Light weight metal quadrail (comfortable balance)
+ Rotary hopup
+ Stable performance 1.48-1.5J
+ Bolt catch/ release function
+ good internals incl.metal head and metal sealed nozzle
+ well- built overal & very affordable

Cons:
- stock pad is plastic. No rubber pad.
- easy to scratch- paint quality is not perfect
- High cap mag instead of mid cap in the box
- No Mosfet or at least mictoswitch (fair due to low price)

I played with this gun on the weekend. It has good accuracy and absolutely universal. Can be used in the forest and in CQB.
I definitely recommend it both for newcomers and for advanced players who want to make a custom-built.

very solid replica, good metal construction, works perfectly fine with 7.4 and 11,1 v baterrys altho the conector type is mini tamya i made a quick change to t-dean and it works just perfect.
no sling atachment point but still easy to fix and that even depends on the sling you have.
the plastic parts are solid the metal parts are good, there is just a lil issue with the sights but if u put an atachment like a red dot also fixes that.

AEG really solid and well finished. Budget friendly and above average chronograph values.
The only flaws are a ris with a little bit of play (easily fixed) and mine arrived without the motor height adjustment screw.

The gun is amazing, came in one piece nothing broken. And work amazingly, very responsive trigger when using a 7.4v lipo. Only down side is no sling attachment points, you have to buy a sling adapter plate. Aside from that all around great gun.

Everything you need is in the package. It performs well in all lightings because of the adjustable red dot brightness modes. It is also quite easy to calibrate and the battery compartment is easily accessible.

Great build quality, very sturdy and doesnt use to much power so battery will last for a long time
Great for cqb with a occasional need for some longer range battling. Red dot itself is a bit dim but other than that great product, worth the price.
FIY. best to pair with a riser.

It is really accurate and easy to install, the height is adjustable which is really nice. The mechanism to attach to the weapons is very useful. The scope is small yet easy enough to see through, so you can aim down the sight and still see the surrounding area.