I have a trigger assy.from a Rem. 700 SPS rifle that I'm parting out and I was asked if the trigger was a Mark 10 type. I saw on Remington's website that the SPS Tact. rifle has an X-Mark trigger. Does anybody here know if there is a difference. The trigger does have a different surface on it than my older Rem. 700 rifle. This trigger is smooth and wide. It looks stainless or nickle. thanks for info, Soren