The next-generation Girsan Double Stack Witness2311 CMX series takes the 1911 design to the next level. Compatible with many 1911 slides, barrels, and parts, the CMX Series isn’t a wolf in sheep’s clothing Double Stack like much of the competition. Don’t be fooled by the words Double Stack. Get the Witness2311 CMX for a true evolution of a 1911 Double Stack with match-grade features.