Does anyone know of any rifle length enhanced buffer tubes?

IIRC, rifle buffer tubes don't use a castle nut (jam nut), so not sure how you'd clock it and lock it, if it had a protruding lip to straddle the buffer retainer pin?

i guess you're asking if somebody makes one that is adapted to use a special castle nut that would allow the butt stock to still slip all-the-way on?

not to my knowledge, but then I never looked for one either.

just my 2 cents.

Thanks, that makes sense. I should have realized that that it wouldn't work without the castle nut.

Just get an A5

I just ordered an A5, but that's for a different build.  The Dark Hour Defense is the only A5 "enhanced" buffer tube I could find. POF no longer produces their 7 position 308 anti-tilt buffer.  The Spikes 308 buffer tube has anti-rotation tabs but they are very small.  The rifle I was originally asking for has an Ace Skeleton stock and that requires an A2 length buffer tube, so it is what it is.