It's a Bell & Carlson stock. You can buy them direct from Remington for $250. Sometimes in-stock is an issue, I was going to buy one a couple of years ago, but they couldn't get it to me before I went hunting, said it would take 3-4 weeks minimum.
I bought a regular B&C Carbelite stock and was perfectly happy with it, even thought it's not as light as the Ti stock. But it was $100 less too.
