I've built a lot of cetmes, a couple FALs, PSLs, etc. Cetmes are simple once you've tooled up, same as any other platform.
US made parts for 922r can mostly be taken from FCG parts from HK suppliers.
There are some "average" barrels available from Apex and Sarco occasionally. I like mine to shoot better than average so I turn and chamber flute my own from blanks.
Parts kits are so cheap one can afford to experiment.
From the top down, oldest build at the top newest (at the time of the photo) at the bottom.
1. Target Cetme with aluminum 3 section stock stock and forearm. Recently replaced the barrel with a Douglas.
2. Standard Cetme with a 16"+ barrel and Collapsible stock
3. Standard(ish) Cetme used for testing new components I made back then. It has a forward assist and shortened mag in the pic.
4. 7.62x39 Cetme using an RPK barrel, AMD style forearm, folding front sight and cone flash hider.
5. Target Cetme patterned off of the original PSG1 configuration with a few additions (all parts home made). McGowen barrel blank used for this one.
6. short stroke gas operated .243win Cetme.
7. Cetme bullpup 16"+ barrel made from parts left over from other builds.
Rifles 1 and 5 are sub MOA shooters with handloads.