The G45 Gen 5 is packed with all-new design features while remaining true to the quality and performance that GLOCK is known for. One of the most noticeable design features is the lack of finger grooves, reminiscent of the earlier generations of the GLOCK pistol. Other considerable design features are the GLOCK Marksman barrel, nDLC Finish, flared mag-well, and ambidextrous slide stop levers. Every GLOCK Gen5 pistol model allows the user to change the circumference of the grip to fit the individual hand size and comes with two sizes of backstraps in two different shapes. The backstraps are easily changed and secured to the frame with a single pin offering the following options: a short frame (SF) version, a medium (M) and a large (L) version.