I bought the flatline in black. Everything is working well so far. Make sure you install the nylon tilt block that is included, it prevents the outer barrel and hop-up from tilting back when the gun is fired. If you do not install the tilt block, not only will your shots be less accurate, but your guide rod plug will get caught on the frame every few shots. I also recommend getting a lower profile BBU, when I used the stock TM BBU, it was grazing the hammer every shot. I went with the LA Capa Customs turbo BBU and nozzle and it fixed the issue. Picking up some extra nozzle springs is a good idea as well. This slide absolutely cranks, so you will go through some springs.