My main outdoors gun is my CA M15A4 rifle. Best AEG I've laid hands on to date, and with very modest upgrades, outperformed other comparable AEGs that cost WAY more. And it's rock solid. I believe that CA metal externals are hands down the best quality stuff in that price range, and I would bet the farm that the externals would hold its own favourably against any other AEG at any price. I wouldn't hesitate to get another CA.