Anyone know what stock was installed on a 2006 Rem 700 Guide Mountain Rifle in 308 Win. Remington was not much help in determining which stock.
Thanks for your help.

bell & carlson?

Bell & Carlson...Same stock as their original Ti.

Remington says its synthetic.Any pics available of the inside of the receiver and barrel channel areas? Or how would I identify the B&C or Ti stock?

It should have aluminum pillars. Sand or drill into it somewhere and you'll see the fibers. It's not a regular injection molded stock.

If it came on a Mountain Guide, it's a B&C.

It does have an aluminum pillar on the rear action screw hole.This one is an ADL version Guide Mnt Rifle. Are these rifles supposed to be free floated. Mine has about a 1"long hump in the barrel channel about 2" back from the fore end.Should this be sanded out? All my heavy barreled custom rifles are free floated. Does free floating apply to these thin barreled rifles?

I know of a 700 ADL mountain guide, never heard of a guide mountain.
They were an exclusive run for Cabela's and came with a B&C aluminum pillar bedded stock. To the best of my recollection this was around 2005 ~ 2007.

A lot of Remington rifles are pressure bedded using a "speed bump" between the barrel and the stock, usually it's at the very fore end of the stock. Even with a B&C, Hogue or HS from the factory it's very common to find a speed bump in the barrel channel.

Unless Remington's description of the rifle says "free floating barrel", it isn't by design or laziness.

One of my 700's in a B&C full length aluminum bed stock didn't shoot to my satisfaction. After steel bedding and free floating shot considerable worse and had to have 11 lbs of upward pressure put back in at the fore end to make it shoot the way I want it to.
On a warm to hot day with a warm to hot barrel it shot okay, cold day cold barrel, worthless.
After the pressure point was re installed and tuned, it shoots 1 ~ 3 shots threw a stone cold barrel excellent.
The rest are free floating except for 2" in front of the recoil lug.
My wife's 700 in a factory tupperware stock with a sizable speed bump shoots too good to even consider messing with.

If it were mine I'd shoot it like it is before messing with it, if it shoots to your satisfaction I'd leave it alone.
Some folks think all barrels should free float, others don't, let the rifle tell you what it needs to be accurate.