AK63 is simply the Hungarian AKM, known in Hungary as the AMM. AKM63 is the 16" barrel with naked gas tube, vented steel fore arm with pistol grip and wood stock. AMD65 used a shorter gas tube and piston with the fore arm and grip from the AKM63, a 12" barrel, the 'snake brake' and a folding wire stock. AK63F is wood stock. AK63D is folding steel stock. So the pre-ban SA85Ms imported by Kassnar consisted of specially-made semi-auto AK63F and AK63D with special finishes and blond wood. The post-ban Sporters were semi-auto AK63F with de-milled features, thumbhole stock and special bright finish.
The post-ban SA85M I bought in 1996 now is more or less in AK63F trim except I use an AMD65 'snake brake' on it because it works so well. Pictured here with my FEG PJK-9HP (hi-power).
SA85M = Semi-Auto, 1985 AMM