Century receivers are very poor quality.
DSA takes upwards of 8-9 weeks for them to deliver. A buddy of mine waited and finally got his DSA receivers and they were very high quality receivers he loves them.
I have 4 DCI receivers and all went together perfectly and they are very high quality fit and finish.
I would stick with DSA or DCI....if you want Imbel receiver gunbroker is your best bet...
I just built mine on a Century with no problems at all, but if they are up to $300 go with a Nodak. That's just a no-brainer. I've got several things from CAI without getting burned, but there are too many stories of spotty quality control to go there if there's a better choice.
i have built a few fal's using imbel receivers and century receivers. i have not had much problem with the century receivers. on the last four builds i had to chase the threads on one of them. all my century receivers were made after 2000.
i know a lot of custom builders wont' use century receivers, in the past they took extra time with the fitting. time is money when your buiding to sell for a living. if your building for yourself an extra 30 to 45 min. really does not matter.
2 century receiver builds, they shoot very good, both of these are built on S.A. (Rhodesia) kits.
I have two Century receivers, but I used them both for pistol caliber conversions. They work great for that because some of the issues these receivers have become mute at that point.
Newer Century "widows peak" receivers seem to be pretty good.
I've used two of them and all went well.