|Caliber:||40 Smith & Wesson (40 Auto)|
|Rate of twist:||1 in 9.84"|
|Trigger pull:||5.5 lbs.|
|Grip:||Modular Back Strap|
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 designed 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. Most noticeably, the basic grip size of the Gen4 is smaller compared to the previous generation designs, due to the fact that the new generation offers a multiple backstrap system that allows the user to change the circumference of the grip to fit their individual hand size. The grip which has a new Rough Textured Frame (RTF) surface designed to enhance grip traction, offers three options: a short frame version, medium frame or large frame that are easily changed and secured with a single pin. The trigger mechanism housing has also been dimensionally adapted to fit in the smaller sized grip space. The magazine release catches are also significantly enlarged and reversible for the ambidextrous shooter. To utilize the swappable magazine release feature, the Gen4 magazines have two notches cut on both sides of the magazine body, allowing users to switch access of the catch to the left or right side of the pistol with no additional parts. Internally, the original recoil spring has been replaced with a dual recoil spring assembly, which noticeably reduces the recoil while simultaneously increasing the life cycle of the part. The slide and barrel shelf have been resized due to the larger diameter of the spring assembly. The front portion of the polymer frame under the slide has also been widened and enlarged internally in order to accommodate the dual assembly.