This is a borescope vid I shot of one of my AR barrels. The barrel is 16” in length, has a 5.56 chamber, 1-7 twist, and is chrome lined. It has ~150 rds through it. This is a factory upper from a reputable manufacturer. I’d just like some opinions on the current state of the chamber and rifling based on the low round count (150 rds). I’m not having any issues whatsoever with the rifle.