This is an aftermarket custom barrel marked "Al Biesen Gunmaker Spokane WA".
This barrel has a high gloss finish that is in excellent condition. The finish is very dark and even, without notable blemishes. The metal is also in excellent condition, without dings, scratches, or other defects.
Bore - 8/10 - This bore has some light wear in the throat and a very few scattered pits, rating an 8 out of 10. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE