Thanks for the replies, everybody. I stumbled onto the Yankee Hill stuff about an hour or so after I posted here. Looks pretty nifty, and would appear to be close to ideal in that I get a vented tube w/ provisions for sling swivel studs, and if the urge should strike me, I can mount *a* small section of rail for putting a lite on for night calling, and if I should get into something like 3-gun matches or some such, I can expand that, with out having to pay up front for more rail than I know what to do with. Seems like about everybody (including YHM) is out of the mid-length 'specter' version.
I had a 'rifle-length' Badg. Ord. tube... it did work nicely over bags, but other than that it just didn't do much for me. Kind of a subjective thing, but thats the way it struck me.
As far as just getting a regular 1 pc tube that screws on... I've had guns set up like that before, and I did drill them for the Harris bipod adapter, etc. At that time I wasn't looking at tearing down, rebuilding, etc. but now that that may be a possibility, it seems like the 1 pc units would have an issue w/ getting the fore end tube 'timed' just right to get the studs back where they need to be. If it gets over or undertorqued... guess thats what they make Loctite 242 for ;)
Thanks again for the help, guys.
nuk