Blueing Wear on East German Mak Trigger

https://preview.redd.it/m6eazqthyhng1.png?width=1538&format=png&auto=webp&s=7ea30206110932adf10f5f45b2710efa4a800de0

Hi guys, I'm guessing I'm way overthinking this but after dry firing my EG mak maybe 500 times and shooting maybe 100 live rounds through it (my main range is snowed in) The trigger developed this wear pattern. I'm guessing this is just normal break in behavior but I don't see it much on other mak pictures?