The P1S is a hybrid of the P11's grip and a P1 slide and barrel, giving you a more concealable gun with a 12-round capacity. Combined with a firing pin block and a manual safety, it a great, and safe carry option for those who prefer hammer-fired gun. The P1S grip offers deep checkering and a comfortable grip which makes it very a popular concealed carry option. All new Mk23 version comes optics ready out of the box with four baseplates for the most common red dot footprints. Robust Mk23 locking system. New upgraded slide desgin and enhanced grip texture.