yep, no ring at all. Its possible that it does fit, as I used a regular AR15 barrel nut wrench on my 308 dpms upper/barrel nut and it fit 100%, but I did get a 308 specific free float rail. if you don't really care about the delta ring (as in reselling it with the handguard) you can cut it off with a grinding wheel instead of dissassembling the barrel nut. I've heard of a few people doing it on ARs before.