6.5 Creedmoor Upper

[BCL]

Can you put a 6.5 Creedmoor upper on an Ar15 lower that has a rifle length buffer? Wasn't sure if an Ar10 lower receiver is required for this caliber upper.
Thanks

[gwp]

The 6.5 Creedmoor is a necked down .308 Winchester and can be used on a AR10 / AR308 lower. The AR10 upper is larger overall and it will not attach to a AR15 lower. The AR10 lower receiver has a larger magazine well and the attachment points are farther apart.

[p246]

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The 30 TC which was based on the 308 was the basis for the 6.5 creedmoor. The 260 Remington is more a direct descendant of the original 308. AR10 parts are hard to switch from manufacturer to manufacture. AR10 and AR 15 uppers and lowers as mentioned above do not interchange. A creemoor has to be build on an AR10 style rifle.