So I just picked up one of these and am wondering what size quad rail I need. I've read on some other forums about people having trouble getting quad rails to fit these and that has me a little worried. Also any suggestions on a decent one would be great. Thanks
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Ruger 556
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Should be carbine length unless you are changing the front sight post / gas block too. These guns do use a different gas block set up, it's pinned on the top side. And the delta ring is screw on instead of spring loaded. These differences might be what's leading to difficulties in changing hand guards out. Google images does show a few with the hand guard replaced, so it is possible. Just might take so tweeking to get it right.
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