Just had a new kral np02 in 177,,,ive put a discovery 40mm ao scope on it,,,kral silencer,,,,this a great little gun had the lot for under 500 pounds,,,,so far so good,,,,ive found the exact heavies suit the gun,,,only issue was the trigger it seemed to be a longer travel than my other guns ,,ive had the trigger sorted and seems fine,,,,great little gun,,