I wasn't saying whether or not your buffer tube was commercial or milspec, i was just saying that stock I linked was milspec only. The main difference between commercial/milspec is the threads on the tube, if they're proud of the tube (thicker than the tube) most likely mil spec, if they're cut INTO the tube (same diameter as the tube) then it's probably commercial.
I may have an extra Stag A2 stock and spacer around here somewhere (no tube, spring or buffer though), pm me if you're interested. I ended up going with an A1 size Cavalry Arms C1 buttstock on a lightweight build with the MOE hand guard.
Here's the rifle:
(Before people go of their rocker, yes it's a 10/30 Pmag)