The Manner TF4 folding stock is held together with a simple yet rock solid locking system. This stock features a standard left-side flush cup, full inlet, 1” decelerator pad, armor grip, and pillar set. One simple button closes the system, but once closed the button cannot be accidentally pressed as it sits .25” below the surface. The area around the button is recessed for easy use with gloves, and once opened the locking mechanism retracts. The system can be serviced in the field by simply removing an internal clip and put a new unit in.