I just read the link provided by Twoshots .. this review of the ZKK and in particular ZKK602 has been updated since an earlier version I read. In the earlier version DeHaas was not sure if the receiver was an investment casting or a forging - it appears he has now been informed that it is a forging. Also he states that the ZKK602's were not provided with set triggers....both of my ZKK 602's came with the little cloth toolkit bag including the disassembly tool and the "other" trigger (IIRC- the straight set trigger was factory installed) ... also came with the manual and a test target with the right size bullet holes. I have often wondered if these factory test targets were actually shot or produced with calibre appropriate pencils .... doesnt matter .. all my ZKK's can easily equal or better the factory targets.....