I'm still puzzled by these...the fact that a "parts bin" exploded view is all we have, rather than a breakdown of one of the complete guns.
I really think it's a blow forward design. The rear valve rules out any kind of inline blowback design I can think of. The cutout below the breech seems to be for a wire detent, not a linkage rod.
The only funny bit is how it has a cocking knob, but that isn't exactly useless, especially if the gun was prone to bolt stick.
Originally Posted by agentSmith
oldschool play is about sportsmanship and respect, oldschool gear is available on Ebay.