The MCS-CP was designed in a joint venture with Vapor Trail Bullets to be a long-range hunting/competition pistol platform. The CP will accept any Remington-based 700 short or XP-100/Seven based action and barrels up to 1.25" straight.The MCS-FClass stock is the result of a collaboration between MCS and many world class shooters. The length of the FClass is about 27a ^2 from the back of the action to the tip of the stock which is about 7 1/2a ^2 longer than the MCS-T4 stock. The increased length makes for a better balance when using a heavy barrel and also allows you to move the bags as far apart as possible to give better stability.