This scope is marked Realist Camputer and has the. 30-06 180 grain cam in it. Here is a chance to buy a VERY RARE, fully functional sniper Rifle Scope. Jim Leatherwood created the ART / MPC after the ART II, taking the knowledge learned with the military applications of his Auto-Ranging-Sniper scopes, and applying them in the design and productions of an Auto-Ranging scope for non-warfare use.