I am building an AR 10 platform in 6.5 creedmore and am currently assembling all the small upper & lower parts. I have read that some small parts are the same as the AR15 parts....while some are specific to the AR 10. Does anyone have a list that shows which small parts are specific to the AR 10 and which parts will work on both the AR 10 and AR15 platforms. Any help would be appreciated.