Works great, and in great condition. Previous owner installed a lower power recoil spring, which reduced stress on the disconnector. Still cycles great, just a little less kick and rof, but efficiency seems to be improved over stock. Comes with the power up suppressor and 1 mag of choice of regular or HPA tapped. I have 6 HPA tapped mags available for extra. If you have trades, offer them up, but mostly looking to trade if your side is worth more. If we're trading I will ship upon reception and inspection of your item. I have vouches, as well as run a shop if you need verification of validity. www.Facebook.com/SigmaAirsoft