That is correct - straight blowback (non-locking bolt) plus a regular gas system with a very close tolerance tube. I am wondering now if any gas system at all was needed. Have a notion to weld the gas port shut in the block, and try it that way, just to see. It might still cycle with the pneumatic 'suction' in the gas tube, but definately slower. Never thought I'd want to 'slow down' a semi, but I'm afraid the super-fast stroke could wreck the feed mechanism. And to think I was sooo concerned it wouldn't have enough pep to cycle..........best laid plans. I have no doubt it could be built in 9mm, but x25 is half the cost. 9mm would probably fit in the links too, frontwards. I'm not home yet or I'd already know
I've had many x25 casings seperate (none in this one, yet) probably because my chambers weren't kept as clean as they should be. Residue builds up, a (cheap surplus) casing sticks/breaks, then I'm pulling it out with a turned-in drill bit. In the process, the chamber receives a tiny nick; now the likelihood of a stuck or broken casing has increased. So I'm keeping 'EC' super clean - 9mm chamber brush on a long rod, in a power drill. I have shot ALOT of x25 and it's been educational, for sure - my first experience with anything corrosive. 8mm was next - same lessons apply
Today I bought an Egyptian Hakim Always wanted one.