I picked up this Stock as part of a larger lot of stuff. I’m not a competitive shooter so it’s kinda foreign to me. Best I can determine is that it fits a Remington 700 short action ADL. It appears to be synthetic with a textured finish. There’s no name, numbers, or identifying marks anywhere on it. Can anybody shed any light on this stock, and maybe it’s value?

The stock pictured is a re-painted-
McMillan 40XC stock that is proprietary to the Remington Custom Shop 40XC's chambered in 7.62NATO,.223 Rem & 40XR(rimfire).
The 7.62x51NATO is the only 40XC that is available today.

Thanks for the info dan! Using that info I did find a couple of mentions of it on google. Any idea what it might be currently worth?

As mentioned previously-
This stock pictured has been painted/speckle textured(no Big deal)
The pillar/column adj cheek piece hardware was originally round knurled thumb screws & not the installed allen set screws(no Big deal)

The 40XC stock is proprietary to the Rem Custom Shop until that model goes out of production.

A "MODIFIED" 40X stock is available from McMillan w/o the full drop belly configuration as the 40XC stock.

Original color was a medium gray - aka automotive gray primer color.

A hardwood/birch model was offered on the 540X rimfire 22LR rifles of the mid/late 80's.

OTC/Across the Course NRA shooters don't particularly care for the wide/full belly McM 40XC stocks of which they are configured to maximum regs for match rifle stocks by NRA.

2 hand rail varieties of the 40XC stock were offered from Remington Custom Shop-
The "short" rail version that is pictured & a full length hand rail version of which are Freeland rails(US) & not Anschutz/FWB(Int'l) rail sections.

Price/cost for this particular stock is in the eye of the beholder/market value ......... $400-$800 dollars.

The 4 that I have in possession on NRA OTC 40X rifles have had the 2 way (up/down) butt plates changed to 3 way(up/down/in-out/cant) adjustable butt plates.

As Dans40x says, it's a Rem 40XC stock. They came in wood and Fiberglass. They were intended for NRA Highpower Rifle competition, but weren't particularly popular there. Today they're in use even less with the advent of Tube Guns and Space Guns for match rifle (non-service rifle use). The XC stocks were available from McMillan (who produced them for Remington), but I think you'd have to beg them break out the old molds. They weren't that popular when they were current on the highpower firing lines. Value? I think $400 to 800 is high. But Dans40X is right, it's now a "find the right buyer" kinda piece. Unscrew the buttplate or rail to see if it's wood or glass underneath. Being able to say it's a McMillan might get you more.

Thanks guys. I have checked and it is fiberglass. As for the knurled screws for the cheek piece, they’re on the left side of this Stock.