As a former nuke weapons tech, I can assure you that [with the smaller warheads especially] there are very few parts in the critters. You could train an average gradeschooler to work on the things.![]()
On the other hand, the Cyklon's second stage rebuild kits consists of 4 pieces, one of them a zip tie.![]()
Once the cost is averaged out over the 2 years between "full" servicing, the expense is right down there with the average regs.
My good old Cyklon 300s are still kicking strong, not a bad trick for a +35 year old reg.