Bumping an old thread...It's a custom chassis for Savage. Technically, its a cross between an LSS-RF and an Oryx in a way. No, this chassis is not available for purchase outside of the pairing with the rifle from the factory. And I can confirm they are shooters. We ran CCI Standard Velocity at the GAP Grind launch, and it was so accurate. Lots of people were doing full clears of the KYL rack we had set up at 50 yards with this in a hurry. There is also the A22 precision rimfire, which was as good as the B series. We have our LSS-RF available for the B22 and A22 already!