The 1913 Mod 3 Vertical Grip features a new, patent pending, BCM® Direct Mount Picatinny 1913 Interface System that not only secures to the mounting surface, but spreads the energy and force throughout the accessory.
The BCM® Direct Mount Picatinny 1913 Interface System is the most rigid, light-weight, and cost effective system available for Vertical Pistol Grips and Hand Stops today. Where conventional and commercial mounting systems allow for shifting and flexing of the accessory, the BCM® Direct Mount 1913 Interface System reduces those issues and offers a more secure lockup, virtually eliminating play in the mounting surface.