Things I liked: Solid construction, easily sighted in, great all around red dot
Things I would have changed: I'm not a huge fan of the flip up covers, I would like to see a totally removable lens cover. Also, a simply on/off switch would be nice. Nothing major
What others should know: I use this with my KWA M4A1. In using this sight, I was lock onto people quicker than normal. Great red dot! Definitely a steal for ~$30.
Things I liked: Overwhelming ROF, good accuracy with .20s, great accuracy with .23s. Very customizable, although it truly doesn't to be tampered with. Adjustable stock is nice. Great all around gun.
Things I would have changed: Larger battery compartment would be nice.
What others should know: It makes sense to buy a KWA for ~$300 and not have to do a single thing to it, yet it will most likely be the best gun on the field. Great buy, highly recommended.