Originally Posted by jimmyp
I thought all the new ones were standard dimensions.


I think he is talking about the area where a RDIAS would go. It would have to be milled out. However, unless you own or are planning on getting a RDIAS, its a non-issue. I can't find anything wrong with my Colt lower, works just like all the rest.


John 8:12 "I am the light of the world. Whoever follows me will never walk in darkness, but will have the light of life."