The grip safety and mainspring housing are the components that have the greatest contact with the shooters hand. A “World Class” gun must provide the shooter’s hand a world class grip. Your hand should mate up with the gun like a custom fit driving glove. To achieve this union, the grip safety must be fit to near zero tolerance. The upper portion of the grip tang must be ground for the highest possible grip while maintaining a natural symmetrical contour. The mainspring housing must be fit for absolutely zero movement vertically or horizontally. The frame from top to bottom should meld with the contour of the grip safety and mainspring housing as if they were made in one piece. BCA guns deliver the best fit to your hand achievable so you and the gun can function as one.