Forget that question. I'm half asleep.
Try Ron Sinnema at Benchmark barrels. He's as good as any.
Benchmark Barrels
Ron Sinnema, 360-652-2594, 1105 Pioneer Hwy. E, Arlington, Wash. 98223
You can ask Ron who is the owner of Benchmark barrels if he can do this for you. I know he can put barrels on a gun. He makes some killer barrels.