THIS FINISH IS NOT DONE BY GLOCK.
NP3 finish is an electroless nickel-based finish for steel, stainless steel and aluminum alloys that co-deposits sub-micron particles of PTFE (polytetrafluoroethylene), otherwise known as Teflon, with electroless nickel. NP3 permits firing for longer periods of time between cleaning, dirt and powder residue have no wet or oily surface to cling to. When cleaning is required, the effort needed is minimal - usually requiring only a soft cloth.
The GLOCK 19 Gen4, in 9x19, introduces revolutionary design changes to the pistol that has found worldwide acclaim with security services both private and public. The Modular Back Strap design lets you instantly customize its grip to adapt to an individual shooter's hand size. The surface of the frame employs the new scientifically designed, real-world-tested, Gen4 rough textured technology. Internally, the new GLOCK dual recoil spring assembly substantially increases the life of the system. A reversible enlarged magazine catch, changeable in seconds, accommodates left or right-handed operators. The G19 Gen4 9x19mm retains the GLOCK accessory rail for your attachments.