Things I liked: Not a single visible imperfection. No seams. Visible in good light, which is valuable for properly sighting optics. Fast!
Things I would have changed: The feed nozzle could be a bit wider at its base, therefore allowing the bb's to pour faster. Inconsistent at higher fps at long range (+100 ft. you must aim center mass and pray to ye airsoft gods o' physics)
What others should know: I am using an upgraded sniper with these (a utg l96) this is the only platform I have to measure their performance. These carry far and fast, and are more easily disrupted by environmental factors (wind, humidity, air pressure). Happy shooting. Experiment with various weights and hop-up adjustments and you'll find a sweet zero.