An amazing gun, powerful and accurate, the sight that is built in is very low down so its highly recommended to get a new sight with it especially if you plan to use it while wearing a full face cover. This gun has a very nice sound to it and is very satisfying to shoot, the full auto mode is incredible. Ive added a scorpion iron sight and a small peq box to mine and thats really all you need to have fun. Its also really easy to add accessories to the gun the muzzle is easy to remove and it fits the standard 14mm ccw thread so the majority of barrel attachments will fit