This is stuff that a gunsmith would do to slick up a action.
Most ak,s and akm,s have the issue to some degree
Some not bad , some really bad.
If your bolt assembly is hanging up and it is really pronounced it can cause problems.

This is a tapco trigger
3.5 pds now.
I ran about 300 rds thru the gun before i did the polish work
Have ran 1600 ish thru it since.

Do not remove metal other than bump edges!!!!

Just a polish / burnish after getting coating off.
I used 800 emery to remove coating
Mothers mag and aluminum polish on
Wool dremel pad at highest speed
Wear glasse it is a messy job

Hammer in forward postion
Under side of hammer wings
Top and underside of trigger hook
Top and underside of disconnect

[Linked Image]

Last edited by renegade50; 12/16/19.