Since it seems we have some very diverse interests I'll try this one. The Baikal 654 came out a # of years ago and it's D/A. The 656 came out after it and it's S/A. Anyone know why? I'd love to get either one but the Mak is WAY too expensive because of it's rarity (seen one go for $400+) and so I'm leaning towards the Tok, but a single action air gun in the 21st century???