Things I liked:the nitro piston upgrade smoothed out the cocking and helped with shooting on this gun. It quiet and very accurate. i like the light weight and balance of the gun. Things I would have changed:I wish pyramyd air offered the charlie da tuna trigger upgrade for the gun while i was getting the nitropiston installed. other than that its great gun. I probably would also upgrade the scope down the road, though the scope it comes with isn't terrible it could do more with a better scope. What others should know:great gun. very fun to shoot.