Hello, i have been lurking here for a while and now I think I need a 25 ar upper to go with my rob, roy, and 06. My question is which wildcat requires the least amount of brass prep or has the most data available. Also where is a good source for a barrel, I am looking for one with traditional not polyagonal rifling. I am not needing a select match barrel but would like an 18inch stainless bull barrel with a mid lenth gas system. Sorry for the long first post
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