Hey guys Im new on here...Just purchased a DPMS Oracle and want to replace the stupid plastic guards. I have been reading about the problems that dpms poses for some rail systems. What rails do you guys recommend and do I need to change anything? I've read people having to change out the gas block so wanted people's opinion/ experience with the DPMS system. Just a quick intro...Im in the Marine Corps stationed in K-Bay, HI and this is my first AR I've bought. Thanks for the help guys.