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Posted: 2/9/2006 8:33:13 AM EDT
Question, RRA sells bull barrel uppers in 16 - 24" length uppers. Whats the difference under that FF tube between them if any? Is the 18" similar to a midlength in gas routing and cycling? Im new and trying to learn what I can. Thanks for any advise.
Link Posted: 2/10/2006 10:05:04 AM EDT
Link Posted: 2/10/2006 1:46:42 PM EDT
Great info..... Thanks.
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