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1/25/2018 7:38:29 AM
Posted: 2/9/2006 7:33:13 AM EST
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 9:05:04 AM EST
Link Posted: 2/10/2006 12:46:42 PM EST
Great info..... Thanks.
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