This is our 18” Stainless Fluted Bull Barrel, 22 LR 1:16 twist with a stunning Candy Blue powder coat finish. Minimum bore / groove diameters are .2165 / .221.
Note: not recommended for Stinger or Sub-Sonic rounds. Muzzle Threading is not availble on this barrel.
Posted by Jared on 2nd Feb 2017
Overall I was impressed with the powder coat. There was a section near the receiver end that was not finished properly. The rest of the barrel was very smooth and uniform. I did contact GM and they were very responsive and did offer to replace it. Since this was a cosmetic defect and would not be seen after installation, I decided to keep it. Looks very good on my stock.