I'm purchasing a Tac A1 chassis without the OEM scope rail that came with it. Looking to find one. I know EGW makes a 20 MOA rail for the Tac A1, but I want to run a Sphur mount with 20 MOA built in, so I need one in 0 MOA, so the best option is the factory one. ANyone have one they want to sell, or know where I can buy the factory Tikka part?