before you buy a CETME you should check out the CETME & FR8 forum on www.gunboards.com
I bought two, and ended up getting my money back on both beacuse of serious problems. The original CETMEs these parts came from were fine rifles, the precursor to the HK91, before they were imported by Century Arms, but since they are not allowed to import the receivers, they manufactured their own. I will tell you their receivers, in general, are an out-of-spec abomination. If you enjoy home gunsmithing, these may be for you, but if you want a rifle that works out of the box, be wary.
Ohio Rapidfire will take Century CETMEs and work all the bugs out, when possible, I think they charge about $200. You might get lucky and get one that is in spec, but Century Arms adjusts the headspace when they build them by grinding down the bolt - eventually you will have problems. These rifles are built from used parts, and sold as "new" because the receiver and barrel are new. Ask the guys on the gunboards.com CETME forum what kind of problems they had - and what is needed to fix them - before you buy - it might save you some frustration.
I would again buy a rifle that was only IMPORTED by Century, But I will never again buy a rifle where Century International Arms has manufactured a major component that cannot be easily replaced. If you think monkeys can't use tools - you haven't seen their shop.