It is a common issue with older century 922r guns they brought in.
Too many sourced parts installed not originally designed for the specific gun.
They " fit"
Then when used up move onto the next batch of parts they had from where ever and make more.
Tolerance stacking basically and geometry problems in the train.
Can be addresed various ways by the end user or thru aftermarket.

Century was infamous for this stuff.
Just throwing it together and sending it out.

It plagued the WASR,s and the Yugo,s century put out back when.


Any other of you guys looking at AK,s or AKM,s
Please stay away from century guns as a whole.
JMO....
WASR,s post 2013 are good guns for a entry level AKM.
No one is gonna snicker at you about a WASR if they know about the manufacturing and proper components of the platform.

Have someone go with you that knows how to inspect a AK or AKM
for proper assembly front to back.
And preferably inspect 2 or 3 of em and pick the best one
Buying sight unseen online is a crap shoot.
You get what they send and might think what they send is normal.
You might get one gun selection at LGS that is GTG or it might have alignment issues in its components.
You can educate yourselves with vids.
How to inspect a AK/AKM vids will help alot and save headaches later on.


You all have a good weekend.