I think this belongs in the technical discussion. (my first thread i believe)...
I was just wondering what buffer i would need/want to use with a Magpul UBR if i were to put one on my lower to use with an 18" rainier upper. I have an A2 stock on it now so obviously i need a carbine buffer, but how heavy? this is the one topic that is very unclear to me after all of my reading about ar15's. thanks for the responses.


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