Hello, For sale is a Donny FL Emperor 30cal with a 1/2x20 thread . This was on my Hatsan Barrage 22 cal for about 1500+ rds before I sold the gun. It is in very good condition and has never been taken apart, it does have a few very tiny scratches but they do not effect the function(please see pictures). $125 Free shipping congenital US. Thank you for looking, Pay Pal Please, and if any questions please ask Thank you Eric