MwRYum
Major
1. They didn't "abandon" when it haven't went full proliferation in the PLA to begin with. To simply put, the one that lead the charge in this sector has been for the longest of time is the PAP, specifically its special forces branch;Is there a reason why it seems like the PLA and PAP has abandoned optical sights and gone full irons until the QBZ-191? So many recent images of them have them decked out in much more modern uniforms but red dots or acog equivalents seem to only be on police firearms or demo shows.
2. PAP has more freedom in equipment acquisition and usage than that of the PLA;
3. PLA is content to let the PAP be the guinea pig in this regard;
4. Made in China equivalent of those optics (red dot, ACOG equivalent, etc.) only took off in the later half of last decade.
Lastly, in order to compel PLA to accelerate its roll out of new-gen personal gears (including optics for new AR), a proper war (for example, with India) will be a necessity.