I'm pretty sure the only thing you would have to worry about would be a loose-er hand guard with all the compression of the delta ring spring, but even then that would take quite a few compressions. I don't have a tool either and I have swapped out hand guards just fine on two separate builds. Removal is harder than installation with the MOE hand guards in my experience, but if you have someone to give you an extra hand it's a breeze.
ETA: Smart choice ditching the UTG quadrail. It looks cool but you really can only use the bottom and side rails for a light and a grip.
Disequilibrium facilitates accommodation.
9mm vs .45 ACP? The answer is .429