Buffer tube question

[hunt n fish]

A quick question for the green screen, if you are switching a ar10 to a carbine buffer tube, can it use a ar15 carbine buffer tube? I know they cannot use the same spring, but can they use the same buffer tube? If not can some one direct me to where I could find one please?

[Luck_of_the_Draw]

I think the AR15 tube is shorter than the AR10.