The delta ring around the standard barrel nut isn't a weak point in any way tbh, there's genuinely millions of M16s and M4s in use in the US forces (and all around the world) with that config and if it was a weak part of the design we'd see them break all the time; so you don't need to change handguard for that reason I'd have to say.
If you just prefer the look of a freefloat handguard then sure personal choice, what Hatchet says is quite right you either get a handguard sufficiently short enough or get a wraparound, often referred to as an FSP cut/cut out. All you need to determine is the length of your faux gas system in order to choose the right freefloat handguard, unless you want to replace your outer barrel and gas tube of course. There are carbine, mid length and rifle length gas systems generally in terms of what's out there in airsoft form.
