I have a Century CETME I have had problems with it sense I first got it.
Initially it cycled about 8 rounds fine then failed to eject the rest of the magazine. I vigorously disassembled and cleaned the gun. After reassembling the cleaned gun it cycled 40 rounds without a single problem. A month later the rifle cycled about 10 rounds and then failed to eject the spent cartridge. I took the mag out and loaded another mag into the gun, which fired 3 rounds without a problem. From then on the rifle will not cycle. The rifle has no problem loading the bullet into the chamber; it also does not have problems firing said bullet once loaded into the chamber. However the bolt will not retreat once the bullet has been fired. I have tried several types of bullets with no avail.
I then took it to a gunsmith. The smith seems to just as perplexed as I am.
He replaced the rollers, the locking piece his did not fix the problem. He replaced my CETME’s bolt head with his friends HK bolt head and he said that the rifle cycled some bullets but not others. It worked well with Remington, but not with Argentinean surplus.
The problem with the surplus he says is that the bolt does not retreat far enough to eject the spent cartridge.
What do you guys think?