I have a Stainless Ruger Mark III with a 5.5" bull barrel. I am waiting on my AAC Aviator and am trying to figure the best way to have the barrel threaded. I was going to just have external threads and have the sight moved back. Then I recently heard of having the threads done internal and using a thread extender so you don't lose any sight radius and the gun looks the same. Anyone have any thoughts, info or pics of this?
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