This silverback srs has been used once and was tested with .4 bbs and hit a human target at 360 ft 3 out of 3 times! It has been upgraded with a fast hop ($40), an s hop ($30) a new inner barrel ($70), a pull conversion kit ($90), and a new systema m160 spring putting this baby at 495 FPS!!! It comes with the rail, krytac metal flash hider, and 1 30 round full metal mid cap magazine!!! I will accept no trades but I could negotiate a price