I first prepared this photographic documentation of an HK G3 clone in early 2001. I wouldn’t dream of doing it again. The Special Weapons SW3 stainless steel cast receiver (also sold as a Century Arms International) is simply not close enough to original specifications to bother with. At the time, the SW3 and a few less common Portuguese “FMP” receivers were the only options. Now with the excellent JLD Enterprises PTR-91 stamped receiver (manufactured in the USA on FMP equipment) readily available, the dramatically substandard SW3 is no longer worth the effort.Furthermore, In the years I have been building HK clones, I have come up with some imp[roved and simplified methods on which I will elaborate. The processes are still the same – just a difference in details. This step-by step guide can be of assistance to some who wish to build their own clone.