Rem 40X stainless question

[MLC]

The local shop has a stainless 40X marked 7.62 NATO and with what look like proof testing marks near the lug.
Remington is not engraved or stamped on the tube.
The barrel seems to be heavier than Sendero in contour.
It has holes at the muzzle end(front sight) and mid barrel as well as a clip slotted action.
It appears to be sitting in a grey stone finish 40X McMillan with cheek riser and adjustable LOP(didn't check out the butt closely)
Does this sound representative of a factory 40X?

 

[Frank]

Don't remember 40x's coming with McMillian stocks. Especially with the adjustable but asm. 40x barrels are 27.25 inches long(40xc are 24 in.) and have a slight straight taper. 1st 2 I pulled out of safe have caliber plus a couple letters stamped just ahead of recoil lug on left side , from rear, on right side is REP in a roundish box and a symbol and a letter, one infront of the REP box and one after. Hop this helps.