Posted: 6/28/2016 9:59:28 PM EDT
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Do the generic quad rails I see on hardened arms, radical firearms, etc. uppers use the same barrel nut as the MI gen 1 ss rails?
They look identical but I want to swap out the shitty quad rail on my hardened arms 8.5" .300 bo upper with something longer and slimmer that will go over a kak can. I don't have the equipment to swap out a barrel nut. |
