[Set] M8870 Shotgun V2 (Green Gas Powered) - Black [Golden Eagle] + Mini Pistol / Carabine Red-Dot Sight - Black [JJ Airsoft]

Had this on a Shark full-auto pistol for a while and it worked fine until one day while shooting the glass just flew off. It wasn't damaged or anything just detached from the frame - managed to put it back with superglue and clean any mess on the glass with acetone, hasn't moved since (over 1000 rounds since then). To be fair, I had dropped it a few times before that, and the full auto blow-back on that pistol is quite violent, maybe on a NBB or at leas a semi-auto GBB it would be fine.
Apart from that it is decently build, and I haven't had any other major issues.
Overall quality is not amazing but not bad either - for the price it is decent.
The buttons are easy to access and it even remembers your brightness setting once you turn it off and back on.
The lowest brightness setting is still too bright, but sadly most red dots are like this.
The protective cap is made from clear plastic and if it is clean you can use the sight without removing it. It has an ear at the back for a string, but it is also a zeroing tool.
Comes with mounting plate for a pistol. Just remember to use the shorter set of screws when mounting it to the plate and the longer ones on the rail mount (comes with two sets). The screw that holds the plate to the pistol needs retightning once in a while. As long as it doesn't get too lose it keeps zero.

The quality is surprisingly good for the price.
Gas efficiency is fair: I’m getting around 35 shots per fill in winter in 3-shot mode, which is more than acceptable for CQB use.
Accuracy is solid up to about 30 meters, which is better than expected for a gas shotgun. It really seems that the V2 version fixed the leaking issues that earlier versions were known for.
The pump action feels solid and has a satisfying sound. One thing to note: if you don’t pull the pump fully to the rear, it can occasionally fail to load BBs correctly. With a firm, full stroke, however, there are no issues at all.
Overall build quality feels good and robust. The stock does feel a bit hollow, but this doesn’t affect functionality — it’s more a tactile/aesthetic detail than a real drawback.

Golden Eagle M8870 airsoft shotgun: very satisfied — solid build quality, durable materials, and reliable performance. A joy to use, great value for money, easy to maintain, and effective in games. Recommended!