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544 Posts
Hey everyone with the know-how. I have in my posession a built AR dmps lower w/grip and M4 kinda stock. I've been looking at uppers and ($$$$) I've been thinking about a 9mm. Whats the process with those? I have to install some kinda mag adapter right? And more than likely get a SBR tag? Is it worth the pain, I already have a 995.
