The gun has been cleaned up and sanded to a 600 grit finish.
I taped off the gun leaving the top rib exposed for sand blasting.
Some medium grit aluminum oxide and some air provided the work, the result is a rough texture, non glare finish
Here are the parts, reblued and covered in oil awaiting re-assembly
The roll marks are still in good condition.
Before and After:
Time to move on to the next project