Glock G22515AUT G22 Gen5 40 S&W 4.49 15+1 Black nDLC Steel with Front Serrations Slide Black Rough Texture Interchangeable Backstraps Grip. This Glock 22 introduces revolutionary design changes to this model of perfection that the majority of law enforcement across the country put their trust in every day. Its modular back strap design lets you instantly customize the grip to adapt to an individual shooter's hand size. The frame employs the scientifically designed real-world-tested rough textured technology. Internally the 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 Gen5 technologies including the nDLC finish a flared mag-well the enhanced GLOCK Marksman barrel (GMB) for increased accuracy and an ambidextrous slide stop lever.