I have a very nice K32 receiver and iron that Krieghoff installed the K80 trigger assembly including the K80 selector button and /K80 trigger guard. This later # receiver has the V shape stock bolt post that is used in the K80 receiver so you don't have to releave any wood from the stock bolt hole on the K80 wood for it to fit. Any K80 wood will fit and the Ser # is 7650 . (( $2400 Delivered to your FFL in the Lower 48 )) Any questions please send a conv message for info and contact # - Thanks Bob