[Jackal]

I've got a Russian AKM and I was wondering what else I could do (if anything) to get some better performance.

I know in cars you can lighten a flywheel so it revs faster. Would there be any benefit to lightening an AK bolt carrier? I'm thinking with less mass, the bolt wouldn't offset the next shot as much.

I already have a break, that admittedly could be better but still works nicely.

As for the trigger group, why should I or shouldn't I polish the contact points...how much is too much to take off? I have noticed that the bolt can rest on the hammer if I get it caught on there. Now during normal firing the bolt would never get caught there, but it still hits it. I know this is normal, but it has to affect the recoil characteristics during firing.

Is there anything else to do or research for performance gains.