Ar gas block??


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james2133
September 5, 2009, 05:57 PM
i want to throw some larue parts at the ar 15 and was wondering if anyone could help with what size gas block i need for a rock river with the wilson r-4 16" barrel... the choices are 3/4 and 5/8... any help would be great

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ants
September 5, 2009, 06:51 PM
From the picture and description on the RRA site, the R-4 profile on the Wilson barrel appears to be a common commercial version of the milspec M4 profile. That would take a standard 0.750 gas block or sight tower.

james2133
September 5, 2009, 06:56 PM
thanks that is what i was thinking but wanted to make sure prior to ordering

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