on a karni, the cockind rod is threaded into the back block, it doesnt come through it like on other cockers. its designed never to need adjusted once it leaves the factory. other than that, there are prbably some other small differences as well, i dont the the cocking rod threads into the hammer either. since its attatched to the back block, that means it cant be attatched to the hammer.
soo....on a normal cocker, the back block pulls the cocking rod back, which pulls back the hammer. then the back block goes back forward and the cocking rod/hammer stay back.
on a karni, the same thing happens, except the cocking rod moves back forwad with the back block, and just the hammer stays back. the cocking rod is free to move back through the hammer.
lol, so basically it doesnt thread into the hammer, it threads into the back block, you can see the hammer and the plastic bit. The end of the cocking rod is free to move inside that bit and not threaded into the hammer like an alamo hammer