Is the stock barrel nut compatible with any other handguards?

My googling suggested it is likely a leapers/utg quad rail. I want something lighter.

I don't use the quad rail for anything other than a place to attach a bipod. The rifle now has a scope so i don't even have the Magpul sights on it anymore.

I have the tools to remove the barrel etc if i have to. But I'd really like not doing that if i don't have to.

-Zach