Thread: barrel pitting , glock 17

ok , so my new glock has some pitting in the grooves , this has had only factory ammo (Belmont ) through it ....I will send it to the Importer and get them to check it ,im hoping they replace it , or maybe offer some deal on a lone wolf barrel or similer , ..... anyone know if I have to have the serial number stamped on the barrel , as all factory barrels are , or not ?
hope the pics show up ....