Lightly used EMG Helios, I will list the Evike link at the bottom so you can look at the specs so you know what you're getting into :) My experiences Haven't had any issues with it until now, it stopped firing because the lower receiver cracked (I did add a picture of this) so I took it to insidious armory (the tech guys) to get it fixed and they told me it would cost $50 to replace the cracked lower and it would run like normal again, they were also able to tell me that this model has issues with the receivers cracking around the quick change spring system because it was a weak point in the metal. Other than this one issue no other problems ever PRICE IS NEGOTIABLE :) https://www.evike.com/products/20768/